Update README.md

Updated after namechange
Update README.md
2026-08-04 13:14:14 +02:00 · 2026-08-04 10:37:24 +02:00 · 2026-07-25 10:42:25 +02:00 · 2026-07-25 09:27:10 +02:00 · 2026-07-25 08:41:41 +02:00 · 2026-07-25 08:38:39 +02:00
12 changed files with 1217 additions and 156 deletions
@@ -7,9 +7,21 @@ APP_PORT=8080

 # Optional settings
 APP_NAME=Photo Date Editor
+# Optional visible page heading. Falls back to APP_NAME when omitted.
+APP_TITLE=Mork Photo Date Editor
+# Optional text shown directly below the page heading.
+APP_SUBTITLE=Family photo metadata editor
+# Enabled groups: jpg, png, tiff, heif, dng, canon, nikon, sony
+# Use ENABLED_FORMATS=jpg for a JPEG-only workflow.
+ENABLED_FORMATS=jpg,png,tiff,heif,dng,canon,nikon,sony
 MAX_UPLOAD_MB=150
 LOG_LEVEL=INFO

+# Optional TIFF, HEIF, and DNG preview limits. Originals are never converted or replaced by previews.
+PREVIEW_MAX_EDGE=2400
+RAW_PREVIEW_MAX_EDGE=1600
+PREVIEW_MAX_PIXELS=300000000
+
 # Optional map/geocoder overrides. Existing .env files may omit these.
 # Map tiles are fetched by the backend and served same-origin to the browser.
 MAP_TILE_SOURCE_URL=https://tile.openstreetmap.org/{z}/{x}/{y}.png
@@ -19,4 +31,4 @@ DEFAULT_MAP_LON=11.0
 DEFAULT_MAP_ZOOM=5
 GEOCODER_URL=https://nominatim.openstreetmap.org/search
 # Optional custom identification sent to the geocoder. The default uses APP_NAME, version and APP_URL.
-# GEOCODER_USER_AGENT=MorkPhotoDateEditor/0.4.1 (+https://edit.mork.fyi)
+# GEOCODER_USER_AGENT=MorkPhotoDateEditor/0.9.2 (+https://edit.mork.fyi)
@@ -1,5 +1,158 @@
 # Changelog

+## 0.9.2
+
+- Apply pending preview rotations physically when saving JPG, PNG, and TIFF files.
+- Show an explicit overlay stating whether rotation will be saved or is preview-only.
+- Preserve pending rotation while navigating between photos during the current session.
+- Use lossless `jpegtran` rotation for compatible JPEG dimensions.
+- Fall back to one high-quality JPEG re-encode when a perfect lossless transform is unavailable.
+- Rotate PNG pixels losslessly and reject animated PNG files rather than dropping frames.
+- Rotate every page of a TIFF with lossless TIFF compression.
+- Restore existing metadata after PNG/TIFF reconstruction, then normalize EXIF/XMP orientation to 1.
+- Keep HEIF, DNG, and all camera RAW formats strictly preview-only for rotation.
+- Reject unsupported or invalid rotation requests at the backend.
+- Add `libjpeg-turbo-progs` to the container for lossless JPEG transforms.
+- Preserve all existing metadata editing, format support, viewport, and streamed-save behavior.
+
+## 0.9.1
+
+- Lock the three-column desktop workspace to the available browser viewport height.
+- Keep the bottom photo-navigation bar visible without whole-page scrolling.
+- Let the photo list and metadata form scroll independently inside their panels.
+- Allow the image stage to shrink with shorter laptop displays while preserving aspect ratio.
+- Add a compact desktop-height layout for browser viewports 800 pixels tall or shorter.
+- Preserve normal document scrolling for tablet and mobile layouts.
+- Preserve all v0.9 format, metadata, preview, and streamed-save behavior.
+
+## 0.9.0
+
+- Add the `nikon` format group with NEF and NRW support.
+- Add the `sony` format group with ARW and ARQ support.
+- Add exact NEF, NRW, ARW, and ARQ badges and format-sort compatibility.
+- Validate the TIFF headers used by Nikon and Sony RAW containers before processing.
+- Prefer embedded JPEG previews before loading the lazy LibRaw fallback.
+- Read and write EXIF, XMP, IPTC, dates, descriptions, keywords, GPS coordinates, and location labels.
+- Preserve Nikon and Sony maker notes, sensor data, embedded previews, and untouched camera metadata.
+- Use the established streamed save path, live transfer progress, and timing diagnostics.
+- Document every `ENABLED_FORMATS` group, its extensions, and its behavior in the README.
+- Keep older Sony SR2 as a future compatibility decision and exclude read-only SRF.
+- Preserve all existing JPG, PNG, TIFF, HEIF, DNG, and Canon RAW behavior.
+
+## 0.8.3
+
+- Stream processed files from the backend in 256 KiB chunks with an explicit content length.
+- Write response chunks directly into the browser's protected writable file instead of creating a complete in-memory Blob.
+- Show live transferred bytes and percentage while saving.
+- Commit the local replacement only after the complete response stream closes successfully.
+- Cancel the response reader and abort the browser writable file if streaming fails.
+- Retain the buffered Blob workflow as a compatibility fallback for browsers without response streaming.
+- Report time to first byte and combined stream/write time for streamed saves.
+- Preserve all existing metadata, format, progress, and folder-state behavior.
+
+## 0.8.2
+
+- Return inspection metadata and the JPEG preview in one compact binary response instead of Base64 JSON.
+- Remove Base64 response expansion and the corresponding browser decode loop.
+- Preserve the detailed save timing after the current photo reloads.
+- Include total, server/transfer, and local-write durations in the save notification.
+- Log end-to-end server duration for `/api/inspect` and `/api/process`.
+- Log temporary-copy, preview-extraction, and metadata-read timings for inspections.
+- Add request-duration and `Server-Timing` response headers for browser diagnostics.
+- Preserve all v0.8.1 RAW opening optimizations and existing format behavior.
+
+## 0.8.1
+
+- Upload server-preview formats only once when opening them, returning the preview and metadata together.
+- Stop at the first usable embedded RAW preview instead of extracting every candidate.
+- Add `RAW_PREVIEW_MAX_EDGE` (default `1600`) for smaller temporary RAW previews.
+- Keep LibRaw as a lazy fallback only when no embedded RAW preview is usable.
+- Show separate server/transfer and local-file-write durations after saving.
+- Log upload, ExifTool rewrite, and response-read timings and expose them through `Server-Timing`.
+- Allow up to three minutes for large DNG and Canon RAW metadata rewrites.
+- Preserve all existing format and in-place overwrite behavior.
+
+## 0.8.0
+
+- Add the `canon` format group with CR2 and CR3 support.
+- Add exact `CR2` and `CR3` badges and format-sort compatibility.
+- Validate TIFF-based CR2 headers separately from ISO-BMFF-based CR3 headers.
+- Extract `JpgFromRaw`, `PreviewImage`, and `ThumbnailImage`, using the largest valid embedded preview.
+- Use the lazy LibRaw decoder only when a Canon RAW file has no usable embedded preview.
+- Read and write CR2 EXIF, XMP, IPTC, date precision, description, keywords, GPS coordinates, and location labels.
+- Read and write CR3 EXIF and XMP metadata without applying unsupported IPTC-IIM fields.
+- Preserve Canon maker notes, sensor data, embedded previews, and other untouched camera metadata.
+- Update enabled-format configuration, UI text, manifest, README, and the RAW roadmap, including planned Nikon and Sony phases.
+- Preserve all established JPG, PNG, TIFF, HEIF, and DNG behavior.
+- Bump the application and service-worker cache version to 0.8.0.
+
+## 0.7.1
+
+- Add `ENABLED_FORMATS` with the available groups `jpg`, `png`, `tiff`, `heif`, and `dng`.
+- Expand each group to its associated extensions and expose the enabled groups/extensions through `/api/config`.
+- Omit disabled formats from browser folder scans and reject them at backend metadata, preview, and processing endpoints.
+- Generate the default page subtitle and empty-folder guidance from the enabled format groups.
+- Validate configuration strictly so unknown or empty format lists fail clearly at startup.
+- Load `pillow-heif` only on the first HEIF preview.
+- Prefer an embedded DNG preview without loading LibRaw, and import `rawpy` only when a rendered DNG fallback is actually required.
+- Keep a decoder loaded after first use until container restart, avoiding repeated load/unload overhead.
+- Preserve all format behavior when `ENABLED_FORMATS` is omitted.
+- Bump the application and service-worker cache version to 0.7.1.
+
+## 0.7.0
+
+- Add DNG folder scanning, `DNG` format badges, and format-sort compatibility.
+- Add browser-friendly DNG previews by preferring embedded `JpgFromRaw`, `PreviewImage`, and `ThumbnailImage` data.
+- Add a half-size LibRaw rendering fallback for DNG files without a usable embedded preview.
+- Add `rawpy` and the container OpenMP runtime required by its LibRaw decoder.
+- Validate DNG uploads as TIFF-based files before processing.
+- Read and write DNG EXIF, XMP, IPTC, date precision, description, keywords, GPS coordinates, and location label metadata.
+- Preserve the original DNG container, sensor data, and embedded previews while overwriting the same local file.
+- Update the interface, manifest, environment example, README, and format roadmap.
+- Preserve all established JPG, PNG, TIFF, and HEIF processing behavior.
+- Bump the application and service-worker cache version to 0.7.0.
+
+## 0.6.1
+
+- Add optional `APP_TITLE` and `APP_SUBTITLE` environment variables for the visible page heading and subtitle.
+- Keep `APP_NAME` backward-compatible as the title fallback and application identity.
+- Update the browser tab title from the configured page title.
+- Bump the application and service-worker cache version to 0.6.1.
+
+## 0.6.0
+
+- Add HEIC, HEIF, and HIF folder scanning and in-place metadata processing.
+- Normalize all three HEIF-family extensions to a `HEIF` format badge and include them in format sorting.
+- Generate temporary browser-friendly JPEG previews for HEIF-family images while preserving and overwriting the original container on save.
+- Add `pillow-heif` and the container HEIF runtime needed to decode previews.
+- Validate HEIF-family files as ISO Base Media File Format containers with recognized HEVC image brands before processing, without admitting renamed AVIF files.
+- Read and write HEIF EXIF/XMP dates, precision marker, description, keywords, GPS coordinates, and location label without applying IPTC-IIM fields.
+- Return updated files using HEIC/HEIF media types while keeping the original filename and extension.
+- Update the interface, manifest, documentation, and empty-folder guidance for the new formats.
+- Preserve the established JPG, PNG, and TIFF processing paths.
+- Bump the application and service-worker cache version to 0.6.0.
+
+## 0.5.0
+
+- Add in-place PNG metadata reading and writing.
+- Add in-place TIFF/TIF metadata reading and writing.
+- Generate temporary browser-friendly JPEG previews for TIFF files while preserving and overwriting the original TIFF on save.
+- Validate JPEG, PNG, and TIFF file signatures before metadata processing.
+- Add normalized JPG, PNG, and TIFF format badges to the left photo list.
+- Show the current file format alongside size and modified time in the viewer.
+- Add **Sort: Format**, grouping by normalized format and then filename.
+- Keep TIFF list thumbnails lazy: a format tile is shown until that TIFF has been opened and previewed.
+- Add configurable TIFF preview edge and pixel limits.
+- Bump the application and service-worker cache version to 0.5.0.
+
+## 0.4.3
+
+- Fix favorite locations appearing empty after a browser refresh.
+- Load the shared server-side favorite list during application startup instead of waiting for **Open photo folder**.
+- Keep the existing refresh when opening a folder as a defensive re-sync for changes made by another family member.
+- Preserve all favorites already stored in the `photo-date-editor-data` Docker volume.
+- Bump the application and service-worker cache version to 0.4.3.
+
 ## 0.4.2

 - Added shared favorite locations to the Location tab.
@@ -4,7 +4,7 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

 RUN apt-get update \
-    && apt-get install -y --no-install-recommends ca-certificates libimage-exiftool-perl \
+    && apt-get install -y --no-install-recommends ca-certificates libgomp1 libheif1 libimage-exiftool-perl libjpeg-turbo-progs \
    && rm -rf /var/lib/apt/lists/*

 WORKDIR /app
@@ -1,12 +1,17 @@
-# Photo Date Editor
+# mExifEditor

-Version 0.4.2
+> [!Important]
+This project was written 100% by AI for my needs. Feel free to use it if it fits your needs.\
+The only things I've done as a human is to tell it what to make, how to modify to fit my needs and which direction to go.\
+Project is shared as-is since it covers my needs.

-A self-hosted browser UI for manually dating scanned photographs. The browser receives temporary read/write access to a local computer or Chromebook folder, sends one JPEG at a time to the Docker backend for ExifTool processing, and overwrites the same local file after processing.
+Version 0.9.2
+
+A self-hosted browser UI for manually dating scanned photographs. The browser receives temporary read/write access to a local computer or Chromebook folder, sends one image at a time to the Docker backend for ExifTool processing, and overwrites the same local file after processing.

 ## Current scope

- JPG and JPEG
+- JPG/JPEG, PNG, TIFF/TIF, HEIC/HEIF/HIF, DNG, Canon CR2/CR3, Nikon NEF/NRW, and Sony ARW/ARQ
 - Local directory picker in supported Chromium browsers
 - Three-column photo workflow
 - Exact date, month/year, year-only, approximate year
@@ -16,12 +21,19 @@ A self-hosted browser UI for manually dating scanned photographs. The browser re
 - Shared favorite locations persisted in a Docker volume for all family members and browsers
 - In-place overwrite: no browser download and no `_original` file
 - Saved/skipped/pending/failed state stored in browser local storage
- Filename search, status filtering, and filename/status sorting
+- Filename search, status filtering, and filename/status/format sorting
+- Normalized JPG, PNG, TIFF, HEIF, DNG, CR2, CR3, NEF, NRW, ARW, and ARQ format badges in the photo list
 - Segmented progress bar: saved is green, skipped is yellow, failed is red, and pending remains grey
- Existing metadata is read from the JPEG when a photo is selected
+- Existing metadata is read from supported files when selected
 - Files previously edited by this app are recognized from their XMP marker, even in a different browser
 - Keyboard navigation, including `Shift+Tab` between right-side tabs

+## Preview behavior
+
+JPG and PNG are displayed directly by the browser. Chromium browsers do not reliably display TIFF, HEIF-family images, DNG, CR2, CR3, NEF, NRW, ARW, or ARQ, so those formats are temporarily uploaded to `/api/inspect`, which returns both metadata and a browser-friendly JPEG preview from one upload. The response uses a compact length-prefixed binary envelope rather than Base64 JSON. TIFF uses Pillow, HEIF uses `pillow-heif`, and RAW formats stop at the first usable embedded preview in a container-specific priority order. If none is usable, LibRaw renders a half-size preview through `rawpy`. The preview exists only in memory and is never written over the source file.
+
+When a server-preview format is saved, ExifTool updates the original container and the browser overwrites the same local file through the streamed save path. The original is not converted to JPEG and no additional copy is intentionally left behind.
+
 ## Requirements

 - Docker with Docker Compose
@@ -29,7 +41,7 @@ A self-hosted browser UI for manually dating scanned photographs. The browser re
 - HTTPS when accessed from another device
 - A backup of irreplaceable scans before testing any metadata editor

-The browser File System Access API is required. Firefox and Safari are not supported by this first version.
+The browser File System Access API is required. Firefox and Safari are not supported by this version.

 ## Install

@@ -45,9 +57,17 @@ Example `.env`:
 APP_URL=https://photos.example.internal
 APP_PORT=8080
 APP_NAME=Photo Date Editor
+APP_TITLE=Mork Photo Date Editor
+APP_SUBTITLE=Family photo metadata editor
+ENABLED_FORMATS=jpg,png,tiff,heif,dng,canon,nikon,sony
 MAX_UPLOAD_MB=150
 LOG_LEVEL=INFO

+# Optional TIFF/HEIF/RAW preview limits
+PREVIEW_MAX_EDGE=2400
+RAW_PREVIEW_MAX_EDGE=1600
+PREVIEW_MAX_PIXELS=300000000
+
 # Optional map defaults and service overrides
 MAP_TILE_SOURCE_URL=https://tile.openstreetmap.org/{z}/{x}/{y}.png
 MAP_ATTRIBUTION=&copy; OpenStreetMap contributors
@@ -59,7 +79,38 @@ GEOCODER_URL=https://nominatim.openstreetmap.org/search

 Open the configured HTTPS URL through Caddy, click **Open photo folder**, and grant read/write access.

-## Upgrade from 0.1 through 0.4.1
+## Enabled formats
+
+`ENABLED_FORMATS` accepts a comma-separated list of format groups:
+
+| `.env` group | Formats enabled | Preview and metadata behavior |
+|---|---|---|
+| `jpg` | JPG/JPEG: `.jpg`, `.jpeg` | Browser-native preview; EXIF, XMP, and IPTC |
+| `png` | PNG: `.png` | Browser-native preview; EXIF and XMP |
+| `tiff` | TIFF: `.tif`, `.tiff` | Server JPEG preview; EXIF, XMP, and IPTC |
+| `heif` | HEIF family: `.heic`, `.heif`, `.hif` | Lazy HEIF decoder; EXIF and XMP |
+| `dng` | Adobe DNG: `.dng` | Embedded preview or lazy LibRaw; EXIF, XMP, and IPTC |
+| `canon` | Canon RAW: `.cr2`, `.cr3` | Embedded preview or lazy LibRaw; CR2 uses EXIF/XMP/IPTC, CR3 uses EXIF/XMP |
+| `nikon` | Nikon RAW: `.nef`, `.nrw` | Embedded preview or lazy LibRaw; EXIF, XMP, and IPTC |
+| `sony` | Sony RAW: `.arw`, `.arq` | Embedded preview or lazy LibRaw; EXIF, XMP, and IPTC |
+
+The default enables every group:
+
+```dotenv
+ENABLED_FORMATS=jpg,png,tiff,heif,dng,canon,nikon,sony
+```
+
+For a JPEG-only installation:
+
+```dotenv
+ENABLED_FORMATS=jpg
+```
+
+Disabled formats are omitted from folder scans and rejected by the backend. The page subtitle and empty-folder message reflect the enabled groups. Unknown group names stop application startup with a clear configuration error instead of silently enabling or disabling the wrong format.
+
+HEIF and RAW decoders load lazily. A JPEG-only process does not import them. After the first applicable preview, the decoder remains loaded until the container restarts; repeatedly unloading it would add avoidable delay and memory churn. For DNG, Canon, Nikon, and Sony RAW, LibRaw is loaded only if no usable embedded JPEG preview is available.
+
+## Upgrade from earlier releases

 Replace the project files with this version and rebuild:

@@ -67,7 +118,7 @@ Replace the project files with this version and rebuild:
 docker compose up -d --build
 ```

-The existing `.env` can be kept. Browser progress from 0.1 remains compatible. A normal refresh should load the new service-worker cache; use a hard refresh if an old UI remains visible.
+The existing `.env` can be kept. When `ENABLED_FORMATS` is omitted, all current format groups remain enabled. `APP_TITLE` and `APP_SUBTITLE` are optional. When `APP_TITLE` is omitted, the visible page title continues to use `APP_NAME`; when `APP_SUBTITLE` is omitted, it is generated from the enabled formats. Browser progress from earlier releases remains compatible. A normal refresh should load the new service-worker cache; use a hard refresh if an old UI remains visible.

 ## Caddy example

@@ -89,15 +140,35 @@ The browser directory picker requires a secure context. Use a certificate truste

 ## What happens when Save is clicked

-1. The browser reads the selected local JPEG.
+1. The browser reads the selected local file in any enabled format.
 2. It sends the file and entered fields to `/api/process`.
 3. ExifTool modifies a temporary file inside the container using `-overwrite_original`.
-4. The backend returns the modified JPEG.
+4. The backend returns the modified file using its original media type.
 5. The browser writes the returned bytes over the selected original file with `createWritable()`.
 6. The backend temporary directory is deleted automatically.

 No second photo is intentionally left on the client computer or Docker host.

+RAW saves still require the complete original to travel to Docker and the complete rewritten file to return to the browser. ExifTool must also rewrite the metadata-bearing RAW container. The optimized opening path removes duplicate uploads, but the full save round trip is inherent while the folder belongs to the browser rather than the Docker host.
+
+During a save, the backend streams the processed file in 256 KiB chunks and the browser writes each chunk directly into its protected temporary writable file. The UI shows transferred bytes and percentage. The original is replaced only after the complete stream closes successfully; failures abort the temporary writable file. Browsers without response streaming use the previous buffered Blob workflow.
+
+After a streamed save, the status panel and popup show total time, time to first byte, and combined stream/write time. Container logs also show end-to-end request duration and break inspection work into temporary-copy, preview, and metadata stages.
+
+## Metadata behavior by format
+
+- **JPG/JPEG:** EXIF, XMP, and IPTC fields are written.
+- **TIFF/TIF:** EXIF, XMP, and IPTC fields are written.
+- **PNG:** EXIF and XMP fields are written. PNG metadata support varies more between third-party viewers than JPEG/TIFF support, so test the applications that will consume the files.
+- **HEIC/HEIF/HIF:** EXIF and XMP fields are written. IPTC-IIM is not used for these ISO Base Media File Format containers. Date precision, description, keywords, GPS coordinates, and the location label remain represented through EXIF/XMP fields.
+- **DNG:** EXIF, XMP, and IPTC fields are written into the original TIFF-based DNG container. Raw sensor data and embedded previews are not regenerated or replaced.
+- **CR2:** EXIF, XMP, and IPTC fields are written into the original TIFF-based Canon RAW container.
+- **CR3:** EXIF and XMP fields are written into the original ISO Base Media File Format container. IPTC-IIM is not used for CR3.
+- **NEF/NRW:** EXIF, XMP, and IPTC fields are written into the original TIFF-based Nikon RAW container.
+- **ARW/ARQ:** EXIF, XMP, and IPTC fields are written into the original TIFF-based Sony RAW container.
+
+The app writes its precision marker to XMP for all supported formats. GPS coordinates are written to EXIF and XMP. The optional location label is written to XMP IPTC Core Location.
+
 ## Date behavior

 EXIF date fields require a complete timestamp:
@@ -120,23 +191,19 @@ The chosen precision is also written into XMP Photoshop Instructions.
 - `C`: Copy previous values when not typing
 - `Shift+Tab`: Open the previous right-side metadata tab and place focus in its first field; normal `Tab` still advances through fields

-
 ## Location behavior

-Favorite locations are shared by everyone using the same Docker stack. Choose a saved place and click **Use**, or place a pin/set coordinates and click **Add current location** in the favorite-locations card. The favorite list is stored in the named Docker volume `photo-date-editor-data`, so it survives image rebuilds and container recreation. Deleting a favorite only removes it from the reusable list; it does not alter photos that were already geotagged.
+Favorite locations are loaded automatically when the page opens and are shared by everyone using the same Docker stack. Choose a saved place and click **Use**, or place a pin/set coordinates and click **Add current location** in the favorite-locations card. The favorite list is stored in the named Docker volume `photo-date-editor-data`, so it survives image rebuilds and container recreation. Deleting a favorite only removes it from the reusable list; it does not alter photos that were already geotagged.

 The **Location** tab supports five ways to set GPS metadata:

 1. Choose a shared favorite location.
-
 2. Search for an address or place and choose a result.
 3. Click directly on the map.
 4. Drag the existing marker.
 5. Enter decimal latitude and longitude manually.

-On save, coordinates are written to EXIF and XMP GPS fields. The optional location label is written to XMP IPTC Core Location. Use **Clear location** and save to remove GPS coordinates and the app-managed location label.
-
-The default map tiles and address search are external OpenStreetMap services. Both are requested by the Docker backend rather than directly by the browser. This avoids Brave third-party blocking and keeps all browser requests same-origin through Caddy. Tiles are cached in container memory. Search is user-triggered rather than autocomplete, rate-limited to one uncached request per second, and cached in memory. The tile source and geocoder URLs remain configurable in `.env` for later self-hosting or another provider.
+The default map tiles and address search are external OpenStreetMap services. Both are requested by the Docker backend rather than directly by the browser. Tiles are cached in container memory. Search is user-triggered, rate-limited, and cached in memory. The tile source and geocoder URLs remain configurable in `.env`.

 ## Important limitations

@@ -144,22 +211,30 @@ The default map tiles and address search are external OpenStreetMap services. Bo
 - Browser permission may need to be granted again after closing/reopening the browser.
 - Saved and skipped progress is stored per browser and folder name. The app also reads its own XMP marker from edited files so saved metadata can be recognized on another browser.
 - Overwriting a file through the browser generally changes its filesystem modified time to the time of the save. EXIF/XMP photo dates are independent of that filesystem timestamp.
- Preview rotation is visual only in this MVP; it does not rotate image pixels or write orientation metadata.
- The Docker host needs outbound HTTPS access for the default map tiles and address search. Browser requests remain same-origin through the app.
- Test with copies first, then use your own normal backup routine for the originals.
+- Preview rotations are physically applied when saving JPG, PNG, and TIFF files. Orientation metadata is normalized after the pixels are rotated.
+- JPEG rotation uses lossless `jpegtran` when the dimensions permit a perfect transform. Otherwise it performs one high-quality re-encode and reports that in the save notification.
+- PNG rotation is lossless. Animated PNG files are deliberately rejected rather than silently dropping frames.
+- TIFF rotation preserves and rotates all pages, uses lossless TIFF compression, and restores metadata before applying the edited fields.
+- HEIF, DNG, CR2, CR3, NEF, NRW, ARW, and ARQ rotation remains preview-only. Their pixels and orientation metadata are never changed by the rotation controls.
+- Multi-page TIFF files display the first page/frame in the editor. Metadata is written to the TIFF container, not to separate pages.
+- HEIF image sequences display their primary/first image in the editor. Metadata is written to the HEIF container.
+- DNG, CR2, CR3, NEF, NRW, ARW, and ARQ use the first usable embedded JPEG in a format-specific priority order before falling back to a half-size LibRaw render.
+- `RAW_PREVIEW_MAX_EDGE` defaults to 1600 pixels to keep temporary previews responsive. It never resizes the RAW original.
+- Very large TIFF, HEIF, or RAW files may require raising `MAX_UPLOAD_MB` or `PREVIEW_MAX_PIXELS`.
+- RAW rendering depends on the camera and compression variant being supported by the bundled LibRaw version. Metadata editing can still be supported by ExifTool even when a particular RAW file cannot be rendered.
+- Canon, Nikon, and Sony maker notes, sensor data, embedded previews, and camera-specific metadata are preserved rather than intentionally rewritten. Always validate with copies from the camera models in your archive.
+- [ExifTool documents](https://exiftool.org/#supported) that some Sony Imaging Edge versions may reject ARW/ARQ files after ExifTool edits even though Adobe, Apple, Capture One, Affinity Photo, and LibRaw-based software can open them. Test Sony copies in the exact software you intend to use.
+- HEIF metadata compatibility varies between operating-system galleries and photo-management applications. Verify the fields in the software that will consume your library.
+- The Docker host needs outbound HTTPS access for the default map tiles and address search.
+- Test with copies first, then use your normal backup routine for the originals.

 ## Planned format expansion

-Format support needs two separate capabilities: safe metadata writing and a preview the browser can display. ExifTool gives the backend a strong metadata foundation, while formats that browsers do not reliably preview will use a temporary server-generated preview without converting or replacing the original file.
+Format support needs both safe metadata writing and a browser-friendly preview. Formats that browsers do not reliably display will use a temporary server-generated preview without converting or replacing the original file.

-### Proposed order
+### Remaining considerations

-1. **PNG** — direct browser preview and in-place EXIF/XMP/IPTC metadata writing.
-2. **TIFF/TIF** — in-place metadata writing, with a server-generated preview where the browser cannot display the file directly.
-3. **HEIC/HEIF/HIF** — in-place EXIF/XMP writing and a server-generated preview. This phase should use a recent ExifTool release and test normal, HDR, and motion-photo samples.
-4. **DNG** — in-place metadata writing and preview extraction/rendering.
-5. **Canon RAW** — `CR2` and `CR3`, using per-format tag rules and embedded/server-generated previews.
-6. **Nikon RAW** — `NEF` and `NRW`, using per-format tag rules and embedded/server-generated previews.
+Older Sony `SR2` remains a possible compatibility addition. `SRF` is read-only in ExifTool and remains excluded.

 `RAW` is not treated as one universal format. Each camera family will be enabled and tested explicitly.

@@ -169,10 +244,6 @@ Format support needs two separate capabilities: safe metadata writing and a prev
 - **BMP/DIB** — ExifTool can read it but cannot write the metadata this app needs.
 - **SVG, PDF, EPS, WebP, AVIF, EXR, XCF** — intentionally outside the scope of this photo workflow.

-RAW support will remain **in-place** by default to match the JPEG workflow. Before enabling it, the app needs format-specific round-trip tests and clear warnings because proprietary camera originals deserve a stricter safety bar than scans.
-
 ## Future video support

-MP4 is feasible after the planned photo formats, but it will be a separate media phase rather than just another image extension. Browsers can preview MP4 directly, while ExifTool can write selected QuickTime/MP4 metadata such as creation dates, descriptive fields, and static GPS coordinates. Videos do not use the same EXIF model as JPEGs, so the app will map the existing fields to compatible QuickTime and XMP tags.
-
-The current browser-to-Docker-to-browser workflow transfers the complete file for every save. That is acceptable for photos but inefficient for large videos. Before enabling MP4, the app should add streamed/chunked transfer, larger configurable upload limits, clear progress reporting, and round-trip tests against common players and photo libraries. MP4 support is planned after PNG, TIFF, HEIC/HEIF, DNG, Canon RAW, and Nikon RAW.
+MP4 remains feasible after the planned photo formats, but it will be a separate media phase rather than just another image extension. The existing fields can be mapped to compatible QuickTime and XMP metadata, but large videos need streamed/chunked transfer, progress reporting, larger limits, cancellation, and compatibility testing before in-place support is enabled.
@@ -1,10 +1,12 @@
 from __future__ import annotations

 import asyncio
+import io
 import json
 import logging
 import os
 import re
+import shutil
 import subprocess
 import tempfile
 import threading
@@ -18,16 +20,117 @@ from datetime import datetime
 from pathlib import Path
 from typing import Annotated, Any

-from fastapi import FastAPI, File, Form, HTTPException, UploadFile
+from fastapi import FastAPI, File, Form, HTTPException, Request, UploadFile
 from pydantic import BaseModel, Field
-from fastapi.responses import FileResponse, Response
+from fastapi.responses import FileResponse, Response, StreamingResponse
 from fastapi.staticfiles import StaticFiles
+from PIL import Image, ImageOps, UnidentifiedImageError
+from PIL import ImageSequence, JpegImagePlugin
+
+FORMAT_GROUPS: dict[str, tuple[str, ...]] = {
+    "jpg": (".jpg", ".jpeg"),
+    "png": (".png",),
+    "tiff": (".tif", ".tiff"),
+    "heif": (".heic", ".heif", ".hif"),
+    "dng": (".dng",),
+    "canon": (".cr2", ".cr3"),
+    "nikon": (".nef", ".nrw"),
+    "sony": (".arw", ".arq"),
+}
+FORMAT_LABELS = {
+    "jpg": "JPG",
+    "png": "PNG",
+    "tiff": "TIFF",
+    "heif": "HEIF",
+    "dng": "DNG",
+    "canon": "Canon RAW",
+    "nikon": "Nikon RAW",
+    "sony": "Sony RAW",
+}
+
+
+def _enabled_format_groups() -> tuple[str, ...]:
+    configured = os.getenv("ENABLED_FORMATS", ",".join(FORMAT_GROUPS))
+    requested = tuple(dict.fromkeys(
+        value.strip().casefold()
+        for value in configured.split(",")
+        if value.strip()
+    ))
+    unknown = sorted(set(requested) - set(FORMAT_GROUPS))
+    if unknown:
+        raise RuntimeError(
+            "Unknown ENABLED_FORMATS value(s): "
+            f"{', '.join(unknown)}. Available groups: {', '.join(FORMAT_GROUPS)}."
+        )
+    if not requested:
+        raise RuntimeError("ENABLED_FORMATS must contain at least one format group.")
+    return tuple(group for group in FORMAT_GROUPS if group in requested)
+
+
+def _format_list_text(groups: tuple[str, ...]) -> str:
+    labels = [FORMAT_LABELS[group] for group in groups]
+    if len(labels) == 1:
+        return labels[0]
+    if len(labels) == 2:
+        return " and ".join(labels)
+    return f"{', '.join(labels[:-1])} and {labels[-1]}"
+
+
+ENABLED_FORMAT_GROUPS = _enabled_format_groups()
+SUPPORTED_EXTENSIONS = {
+    extension
+    for group in ENABLED_FORMAT_GROUPS
+    for extension in FORMAT_GROUPS[group]
+}
+ENABLED_FORMAT_LABEL = _format_list_text(ENABLED_FORMAT_GROUPS)

 APP_NAME = os.getenv("APP_NAME", "Photo Date Editor")
+APP_TITLE = os.getenv("APP_TITLE") or APP_NAME
+APP_SUBTITLE = (
+    os.getenv("APP_SUBTITLE")
+    or f"Local folder · in-place {ENABLED_FORMAT_LABEL} metadata"
+)
 APP_URL = os.getenv("APP_URL", "http://localhost:8080")
-APP_VERSION = "0.4.2"
+APP_VERSION = "0.9.2"
 MAX_UPLOAD_MB = int(os.getenv("MAX_UPLOAD_MB", "150"))
 MAX_UPLOAD_BYTES = MAX_UPLOAD_MB * 1024 * 1024
+PREVIEW_MAX_EDGE = int(os.getenv("PREVIEW_MAX_EDGE", "2400"))
+RAW_PREVIEW_MAX_EDGE = int(os.getenv("RAW_PREVIEW_MAX_EDGE", "1600"))
+PREVIEW_MAX_PIXELS = int(os.getenv("PREVIEW_MAX_PIXELS", "300000000"))
+Image.MAX_IMAGE_PIXELS = PREVIEW_MAX_PIXELS
+
+TIFF_EXTENSIONS = {".tif", ".tiff"}
+PIXEL_ROTATION_EXTENSIONS = {".jpg", ".jpeg", ".png", ".tif", ".tiff"}
+HEIF_EXTENSIONS = {".heic", ".heif", ".hif"}
+DNG_EXTENSIONS = {".dng"}
+CANON_EXTENSIONS = {".cr2", ".cr3"}
+NIKON_EXTENSIONS = {".nef", ".nrw"}
+SONY_EXTENSIONS = {".arw", ".arq"}
+RAW_EXTENSIONS = DNG_EXTENSIONS | CANON_EXTENSIONS | NIKON_EXTENSIONS | SONY_EXTENSIONS
+IPTC_EXTENSIONS = {
+    ".jpg", ".jpeg", ".tif", ".tiff", ".dng", ".cr2",
+    ".nef", ".nrw", ".arw", ".arq",
+}
+SERVER_PREVIEW_EXTENSIONS = (
+    TIFF_EXTENSIONS | HEIF_EXTENSIONS | RAW_EXTENSIONS
+) & SUPPORTED_EXTENSIONS
+MEDIA_TYPES = {
+    ".jpg": "image/jpeg",
+    ".jpeg": "image/jpeg",
+    ".png": "image/png",
+    ".tif": "image/tiff",
+    ".tiff": "image/tiff",
+    ".heic": "image/heic",
+    ".heif": "image/heif",
+    ".hif": "image/heif",
+    ".dng": "image/x-adobe-dng",
+    ".cr2": "image/x-canon-cr2",
+    ".cr3": "image/x-canon-cr3",
+    ".nef": "image/x-nikon-nef",
+    ".nrw": "image/x-nikon-nrw",
+    ".arw": "image/x-sony-arw",
+    ".arq": "image/x-sony-arq",
+}
 LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO").upper()

 MAP_TILE_SOURCE_URL = os.getenv(
@@ -53,6 +156,9 @@ _last_geocode_request = 0.0
 _tile_cache: OrderedDict[str, tuple[bytes, str]] = OrderedDict()
 _tile_cache_limit = 512
 _tile_lock = asyncio.Lock()
+_decoder_lock = threading.Lock()
+_heif_decoder_registered = False
+_rawpy_module: Any | None = None

 logging.basicConfig(
    level=getattr(logging, LOG_LEVEL, logging.INFO),
@@ -73,7 +179,18 @@ class FavoriteLocationInput(BaseModel):
    longitude: float = Field(ge=-180, le=180)


-app = FastAPI(title=APP_NAME, docs_url=None, redoc_url=None)
+app = FastAPI(title=APP_TITLE, docs_url=None, redoc_url=None)
+
+
+@app.middleware("http")
+async def request_timing(request: Request, call_next: Any) -> Response:
+    started = time.perf_counter()
+    response = await call_next(request)
+    elapsed_seconds = time.perf_counter() - started
+    if request.url.path in {"/api/inspect", "/api/process"}:
+        response.headers["X-Request-Duration-Ms"] = f"{elapsed_seconds * 1000:.1f}"
+        logger.info("%s completed in %.2fs end-to-end on the server", request.url.path, elapsed_seconds)
+    return response


@app.get("/api/health")
@@ -82,12 +199,17 @@ def health() -> dict[str, str]:


@app.get("/api/config")
-def config() -> dict[str, str | int | float]:
+def config() -> dict[str, Any]:
    return {
        "appName": APP_NAME,
+        "appTitle": APP_TITLE,
+        "appSubtitle": APP_SUBTITLE,
        "appUrl": APP_URL,
        "version": APP_VERSION,
        "maxUploadMb": MAX_UPLOAD_MB,
+        "enabledFormats": list(ENABLED_FORMAT_GROUPS),
+        "enabledExtensions": sorted(SUPPORTED_EXTENSIONS),
+        "enabledFormatLabel": ENABLED_FORMAT_LABEL,
        "mapTileUrl": "/api/map/tiles/{z}/{x}/{y}.png",
        "mapAttribution": MAP_ATTRIBUTION,
        "defaultMapLat": DEFAULT_MAP_LAT,
@@ -367,7 +489,83 @@ def _normalise_datetime(
    return exif_datetime, xmp_date, precision_labels[precision]


-async def _save_upload(upload: UploadFile, destination: Path) -> None:
+def _format_name(suffix: str) -> str:
+    if suffix in {".jpg", ".jpeg"}:
+        return "JPEG"
+    if suffix == ".png":
+        return "PNG"
+    if suffix in TIFF_EXTENSIONS:
+        return "TIFF"
+    if suffix in HEIF_EXTENSIONS:
+        return "HEIF"
+    if suffix in DNG_EXTENSIONS:
+        return "DNG"
+    if suffix == ".cr2":
+        return "CR2"
+    if suffix == ".cr3":
+        return "CR3"
+    if suffix == ".nef":
+        return "NEF"
+    if suffix == ".nrw":
+        return "NRW"
+    if suffix == ".arw":
+        return "ARW"
+    if suffix == ".arq":
+        return "ARQ"
+    return suffix.lstrip(".").upper() or "image"
+
+
+def _validate_image_signature(path: Path, suffix: str) -> None:
+    with path.open("rb") as source:
+        signature = source.read(64)
+
+    valid = False
+    if suffix in {".jpg", ".jpeg"}:
+        valid = signature.startswith(b"\xff\xd8\xff")
+    elif suffix == ".png":
+        valid = signature.startswith(b"\x89PNG\r\n\x1a\n")
+    elif suffix in TIFF_EXTENSIONS:
+        valid = signature.startswith((b"II*\x00", b"MM\x00*", b"II+\x00", b"MM\x00+"))
+    elif suffix in HEIF_EXTENSIONS:
+        hevc_brands = {
+            b"heic", b"heix", b"hevc", b"hevx",
+            b"heim", b"heis", b"hevm", b"hevs",
+        }
+        valid = len(signature) >= 16 and signature[4:8] == b"ftyp" and any(
+            signature[offset:offset + 4] in hevc_brands
+            for offset in range(8, len(signature) - 3, 4)
+        )
+    elif suffix in DNG_EXTENSIONS:
+        # DNG is TIFF-based. ExifTool performs the deeper DNG structure
+        # validation when reading, extracting a preview, or writing metadata.
+        valid = signature.startswith((b"II*\x00", b"MM\x00*"))
+    elif suffix == ".cr2":
+        valid = (
+            signature.startswith((b"II*\x00", b"MM\x00*"))
+            and signature[8:12] == b"CR\x02\x00"
+        )
+    elif suffix == ".cr3":
+        valid = (
+            len(signature) >= 16
+            and signature[4:8] == b"ftyp"
+            and any(
+                signature[offset:offset + 4] == b"crx "
+                for offset in range(8, len(signature) - 3, 4)
+            )
+        )
+    elif suffix in NIKON_EXTENSIONS | SONY_EXTENSIONS:
+        # NEF, NRW, ARW, and ARQ are TIFF-based. ExifTool performs deeper
+        # camera-format validation when the file is inspected or written.
+        valid = signature.startswith((b"II*\x00", b"MM\x00*"))
+
+    if not valid:
+        raise HTTPException(
+            status_code=415,
+            detail=f"The uploaded file is not a valid {_format_name(suffix)} image.",
+        )
+
+
+async def _save_upload(upload: UploadFile, destination: Path, suffix: str) -> None:
    total = 0
    with destination.open("wb") as output:
        while chunk := await upload.read(1024 * 1024):
@@ -379,10 +577,7 @@ async def _save_upload(upload: UploadFile, destination: Path) -> None:
                )
            output.write(chunk)

-    with destination.open("rb") as source:
-        signature = source.read(3)
-    if signature[:2] != b"\xff\xd8":
-        raise HTTPException(status_code=415, detail="The uploaded file is not a valid JPEG image.")
+    _validate_image_signature(destination, suffix)


 def _first_value(metadata: dict[str, Any], *keys: str) -> Any:
@@ -506,57 +701,371 @@ def _metadata_values(metadata: dict[str, Any]) -> tuple[bool, bool, dict[str, An
    return has_metadata, edited_by_app, values


+def _ensure_heif_decoder() -> None:
+    """Register pillow-heif once, on the first HEIF preview request."""
+    global _heif_decoder_registered
+    if _heif_decoder_registered:
+        return
+    with _decoder_lock:
+        if _heif_decoder_registered:
+            return
+        from pillow_heif import register_heif_opener
+
+        register_heif_opener()
+        _heif_decoder_registered = True
+        logger.info("HEIF preview decoder loaded.")
+
+
+def _get_rawpy() -> Any:
+    """Import rawpy once, on the first RAW file that needs a rendered fallback."""
+    global _rawpy_module
+    if _rawpy_module is not None:
+        return _rawpy_module
+    with _decoder_lock:
+        if _rawpy_module is None:
+            import rawpy
+
+            _rawpy_module = rawpy
+            logger.info("LibRaw preview decoder loaded.")
+    return _rawpy_module
+
+
+def _raw_preview_tags(suffix: str) -> tuple[str, ...]:
+    if suffix == ".cr2":
+        return ("PreviewImage", "JpgFromRaw", "ThumbnailImage")
+    if suffix == ".cr3":
+        return ("JpgFromRaw", "PreviewImage", "ThumbnailImage")
+    if suffix in NIKON_EXTENSIONS:
+        return ("JpgFromRaw", "PreviewImage", "OtherImage", "ThumbnailImage")
+    if suffix in SONY_EXTENSIONS:
+        return ("JpgFromRaw", "PreviewImage", "ThumbnailImage")
+    return ("JpgFromRaw", "PreviewImage", "ThumbnailImage")
+
+
+def _embedded_raw_preview(path: Path, format_name: str, suffix: str) -> Image.Image | None:
+    """Return the first usable embedded JPEG, ordered for the RAW container."""
+    for tag in _raw_preview_tags(suffix):
+        try:
+            completed = subprocess.run(
+                ["exiftool", "-b", f"-{tag}", "--", str(path)],
+                capture_output=True,
+                timeout=45,
+                check=False,
+            )
+        except subprocess.TimeoutExpired:
+            logger.warning("Timed out extracting %s %s data.", format_name, tag)
+            continue
+        if completed.returncode != 0 or not completed.stdout:
+            continue
+        try:
+            with Image.open(io.BytesIO(completed.stdout)) as source:
+                source.load()
+                preview = source.copy()
+            logger.info("Using %s for %s preview.", tag, format_name)
+            return preview
+        except (UnidentifiedImageError, OSError, ValueError):
+            logger.debug("%s %s data was not a usable image preview.", format_name, tag)
+    return None
+
+
+def _render_raw(path: Path, format_name: str) -> Image.Image:
+    """Render a half-size RGB fallback when RAW has no embedded JPEG preview."""
+    rawpy = _get_rawpy()
+    try:
+        with rawpy.imread(str(path)) as raw:
+            width = int(raw.sizes.width)
+            height = int(raw.sizes.height)
+            if width <= 0 or height <= 0 or width * height > PREVIEW_MAX_PIXELS:
+                raise ValueError(
+                    f"{format_name} dimensions exceed the configured preview pixel limit."
+                )
+            rgb = raw.postprocess(
+                use_camera_wb=True,
+                use_auto_wb=False,
+                no_auto_bright=False,
+                half_size=True,
+                output_bps=8,
+            )
+    except rawpy.LibRawError as exc:
+        raise ValueError(f"LibRaw could not decode this {format_name} file.") from exc
+    return Image.fromarray(rgb)
+
+
+def _transpose_for_clockwise_rotation(image: Image.Image, rotation: int) -> Image.Image:
+    operation = {
+        90: Image.Transpose.ROTATE_270,
+        180: Image.Transpose.ROTATE_180,
+        270: Image.Transpose.ROTATE_90,
+    }[rotation]
+    return image.transpose(operation)
+
+
+def _copy_metadata(source: Path, destination: Path) -> None:
+    completed = subprocess.run(
+        [
+            "exiftool",
+            "-overwrite_original",
+            "-m",
+            "-TagsFromFile",
+            str(source),
+            "-all:all",
+            str(destination),
+        ],
+        capture_output=True,
+        text=True,
+        timeout=90,
+        check=False,
+    )
+    if completed.returncode != 0:
+        logger.error("ExifTool metadata restore after rotation failed: %s", completed.stderr.strip())
+        raise ValueError("Metadata could not be preserved after rotating the image.")
+
+
+def _rotate_jpeg(source: Path, destination: Path, rotation: int) -> str:
+    with Image.open(source) as image:
+        orientation = int(image.getexif().get(274, 1) or 1)
+
+    if orientation == 1:
+        completed = subprocess.run(
+            [
+                "jpegtran",
+                "-copy",
+                "all",
+                "-perfect",
+                "-rotate",
+                str(rotation),
+                "-outfile",
+                str(destination),
+                str(source),
+            ],
+            capture_output=True,
+            timeout=90,
+            check=False,
+        )
+        if completed.returncode == 0 and destination.exists():
+            return "jpeg-lossless"
+
+    with Image.open(source) as image:
+        image.load()
+        corrected = ImageOps.exif_transpose(image)
+        rotated = _transpose_for_clockwise_rotation(corrected, rotation)
+        try:
+            sampling = JpegImagePlugin.get_sampling(image)
+            save_options: dict[str, Any] = {
+                "format": "JPEG",
+                "quality": 95,
+                "optimize": True,
+                "progressive": bool(image.info.get("progressive") or image.info.get("progression")),
+            }
+            if sampling >= 0:
+                save_options["subsampling"] = sampling
+            if image.info.get("icc_profile"):
+                save_options["icc_profile"] = image.info["icc_profile"]
+            rotated.save(destination, **save_options)
+        finally:
+            if corrected is not image:
+                corrected.close()
+            rotated.close()
+    _copy_metadata(source, destination)
+    return "jpeg-reencoded"
+
+
+def _rotate_png_or_tiff(source: Path, destination: Path, suffix: str, rotation: int) -> str:
+    with Image.open(source) as image:
+        image.seek(0)
+        if suffix == ".png" and int(getattr(image, "n_frames", 1)) > 1:
+            raise ValueError("Animated PNG rotation is not supported.")
+        frames: list[Image.Image] = []
+        for frame in ImageSequence.Iterator(image):
+            base = frame.copy()
+            corrected = ImageOps.exif_transpose(base)
+            if corrected is not base:
+                base.close()
+            rotated = _transpose_for_clockwise_rotation(corrected, rotation)
+            corrected.close()
+            frames.append(rotated)
+        if not frames:
+            raise ValueError("The image contains no rotatable frames.")
+        try:
+            if suffix == ".png":
+                options: dict[str, Any] = {"format": "PNG", "optimize": True}
+                if image.info.get("icc_profile"):
+                    options["icc_profile"] = image.info["icc_profile"]
+                if image.info.get("dpi"):
+                    options["dpi"] = image.info["dpi"]
+                frames[0].save(destination, **options)
+                mode = "png-lossless"
+            else:
+                options = {
+                    "format": "TIFF",
+                    "save_all": len(frames) > 1,
+                    "append_images": frames[1:],
+                    "compression": image.info.get("compression", "tiff_deflate"),
+                }
+                if image.info.get("icc_profile"):
+                    options["icc_profile"] = image.info["icc_profile"]
+                if image.info.get("dpi"):
+                    options["dpi"] = image.info["dpi"]
+                frames[0].save(destination, **options)
+                mode = "tiff-lossless-reencode"
+        finally:
+            for frame in frames:
+                frame.close()
+    _copy_metadata(source, destination)
+    return mode
+
+
+def _rotate_pixels(path: Path, suffix: str, rotation: int) -> str:
+    source = path.with_name(f"rotation-source{suffix}")
+    destination = path.with_name(f"rotation-output{suffix}")
+    shutil.copy2(path, source)
+    try:
+        if suffix in {".jpg", ".jpeg"}:
+            mode = _rotate_jpeg(source, destination, rotation)
+        else:
+            mode = _rotate_png_or_tiff(source, destination, suffix, rotation)
+        destination.replace(path)
+        return mode
+    except (Image.DecompressionBombError, UnidentifiedImageError, OSError, ValueError) as exc:
+        logger.warning("Pixel rotation failed for %s: %s", path.name, exc)
+        raise HTTPException(status_code=422, detail=f"The image could not be rotated safely: {exc}") from exc
+
+
+def _preview_bytes(temp_path: Path, suffix: str, filename: str) -> bytes:
+    try:
+        if suffix in RAW_EXTENSIONS:
+            format_name = _format_name(suffix)
+            preview = _embedded_raw_preview(temp_path, format_name, suffix)
+            if preview is None:
+                preview = _render_raw(temp_path, format_name)
+            preview = ImageOps.exif_transpose(preview)
+        else:
+            if suffix in HEIF_EXTENSIONS:
+                _ensure_heif_decoder()
+            with Image.open(temp_path) as source:
+                source.seek(0)
+                preview = ImageOps.exif_transpose(source)
+                preview.load()
+
+        try:
+            max_edge = RAW_PREVIEW_MAX_EDGE if suffix in RAW_EXTENSIONS else PREVIEW_MAX_EDGE
+            preview.thumbnail((max_edge, max_edge), Image.Resampling.LANCZOS)
+            if preview.mode in {"RGBA", "LA"} or (preview.mode == "P" and "transparency" in preview.info):
+                rgba = preview.convert("RGBA")
+                background = Image.new("RGBA", rgba.size, (255, 255, 255, 255))
+                background.alpha_composite(rgba)
+                preview = background.convert("RGB")
+            elif preview.mode != "RGB":
+                preview = preview.convert("RGB")
+            output = io.BytesIO()
+            preview.save(output, format="JPEG", quality=86, optimize=True)
+            return output.getvalue()
+        finally:
+            preview.close()
+    except (Image.DecompressionBombError, UnidentifiedImageError, OSError, ValueError) as exc:
+        format_name = _format_name(suffix)
+        logger.warning("%s preview generation failed for %s: %s", format_name, filename, exc)
+        raise HTTPException(
+            status_code=422,
+            detail=f"The {format_name} image could not be rendered for preview.",
+        ) from exc
+
+
+def _read_metadata_path(temp_path: Path) -> dict[str, bool | dict[str, Any]]:
+    completed = subprocess.run(
+        [
+            "exiftool", "-json", "-s", "-n",
+            "-DateTimeOriginal", "-CreateDate", "-ModifyDate", "-DateCreated",
+            "-Instructions", "-ImageDescription", "-Description", "-Caption-Abstract",
+            "-Subject", "-Keywords", "-GPSLatitude", "-GPSLatitudeRef",
+            "-GPSLongitude", "-GPSLongitudeRef", "-Location",
+            "-LocationShownLocationName", "-City", str(temp_path),
+        ],
+        capture_output=True, text=True, timeout=45, check=False,
+    )
+    if completed.returncode != 0:
+        logger.error("ExifTool metadata read failed: %s", completed.stderr.strip())
+        raise HTTPException(status_code=500, detail="ExifTool could not read this image's metadata.")
+    try:
+        output = json.loads(completed.stdout)
+        metadata = output[0] if isinstance(output, list) and output else {}
+    except json.JSONDecodeError as exc:
+        raise HTTPException(status_code=500, detail="ExifTool returned invalid metadata output.") from exc
+    has_metadata, edited_by_app, values = _metadata_values(metadata)
+    return {"hasMetadata": has_metadata, "editedByApp": edited_by_app, "values": values}
+
+
+@app.post("/api/preview")
+async def create_preview(file: Annotated[UploadFile, File(...)]) -> Response:
+    """Generate a browser-friendly preview for server-preview formats."""
+    filename = file.filename or "photo.tiff"
+    suffix = Path(filename).suffix.lower()
+    if suffix not in SUPPORTED_EXTENSIONS or suffix not in SERVER_PREVIEW_EXTENSIONS:
+        raise HTTPException(status_code=415, detail="This format is disabled or does not require a server preview.")
+    with tempfile.TemporaryDirectory(prefix="photo-date-editor-preview-") as temp_dir:
+        temp_path = Path(temp_dir) / f"source{suffix}"
+        await _save_upload(file, temp_path, suffix)
+        preview_bytes = _preview_bytes(temp_path, suffix, filename)
+    return Response(content=preview_bytes, media_type="image/jpeg", headers={"Cache-Control": "no-store"})
+
+
+@app.post("/api/inspect")
+async def inspect_photo(file: Annotated[UploadFile, File(...)]) -> Response:
+    """Return length-prefixed JSON metadata followed by binary JPEG preview data."""
+    filename = file.filename or "photo.tiff"
+    suffix = Path(filename).suffix.lower()
+    if suffix not in SUPPORTED_EXTENSIONS or suffix not in SERVER_PREVIEW_EXTENSIONS:
+        raise HTTPException(status_code=415, detail="This format is disabled or does not require server inspection.")
+    with tempfile.TemporaryDirectory(prefix="photo-date-editor-inspect-") as temp_dir:
+        temp_path = Path(temp_dir) / f"source{suffix}"
+        copy_started = time.perf_counter()
+        await _save_upload(file, temp_path, suffix)
+        copy_seconds = time.perf_counter() - copy_started
+        preview_started = time.perf_counter()
+        preview_bytes = _preview_bytes(temp_path, suffix, filename)
+        preview_seconds = time.perf_counter() - preview_started
+        metadata_started = time.perf_counter()
+        metadata = _read_metadata_path(temp_path)
+        metadata_seconds = time.perf_counter() - metadata_started
+
+    metadata_bytes = json.dumps(metadata, ensure_ascii=False, separators=(",", ":")).encode("utf-8")
+    body = len(metadata_bytes).to_bytes(4, "big") + metadata_bytes + preview_bytes
+    logger.info(
+        "Inspected %s: temporary copy %.2fs, preview %.2fs, metadata %.2fs",
+        filename,
+        copy_seconds,
+        preview_seconds,
+        metadata_seconds,
+    )
+    return Response(
+        content=body,
+        media_type="application/vnd.photo-date-editor.inspect",
+        headers={
+            "Cache-Control": "no-store",
+            "Server-Timing": (
+                f'copy;dur={copy_seconds * 1000:.1f}, '
+                f'preview;dur={preview_seconds * 1000:.1f}, '
+                f'metadata;dur={metadata_seconds * 1000:.1f}'
+            ),
+        },
+    )
+
+
@app.post("/api/metadata")
 async def read_metadata(file: Annotated[UploadFile, File(...)]) -> dict[str, bool | dict[str, Any]]:
    filename = file.filename or "photo.jpg"
    suffix = Path(filename).suffix.lower()
-    if suffix not in {".jpg", ".jpeg"}:
-        raise HTTPException(status_code=415, detail="This version supports JPG and JPEG files only.")
+    if suffix not in SUPPORTED_EXTENSIONS:
+        raise HTTPException(
+            status_code=415,
+            detail=f"This format is disabled. Enabled format groups: {ENABLED_FORMAT_LABEL}.",
+        )

    with tempfile.TemporaryDirectory(prefix="photo-date-editor-read-") as temp_dir:
        temp_path = Path(temp_dir) / f"source{suffix}"
-        await _save_upload(file, temp_path)
-        completed = subprocess.run(
-            [
-                "exiftool",
-                "-json",
-                "-s",
-                "-n",
-                "-DateTimeOriginal",
-                "-CreateDate",
-                "-ModifyDate",
-                "-DateCreated",
-                "-Instructions",
-                "-ImageDescription",
-                "-Description",
-                "-Caption-Abstract",
-                "-Subject",
-                "-Keywords",
-                "-GPSLatitude",
-                "-GPSLatitudeRef",
-                "-GPSLongitude",
-                "-GPSLongitudeRef",
-                "-Location",
-                "-LocationShownLocationName",
-                "-City",
-                str(temp_path),
-            ],
-            capture_output=True,
-            text=True,
-            timeout=45,
-            check=False,
-        )
-        if completed.returncode != 0:
-            logger.error("ExifTool metadata read failed: %s", completed.stderr.strip())
-            raise HTTPException(status_code=500, detail="ExifTool could not read this image's metadata.")
-        try:
-            output = json.loads(completed.stdout)
-            metadata = output[0] if isinstance(output, list) and output else {}
-        except json.JSONDecodeError as exc:
-            raise HTTPException(status_code=500, detail="ExifTool returned invalid metadata output.") from exc
-
-    has_metadata, edited_by_app, values = _metadata_values(metadata)
-    return {"hasMetadata": has_metadata, "editedByApp": edited_by_app, "values": values}
+        await _save_upload(file, temp_path, suffix)
+        result = _read_metadata_path(temp_path)
+    return result


@app.post("/api/process")
@@ -573,11 +1082,22 @@ async def process_photo(
    latitude: Annotated[float | None, Form()] = None,
    longitude: Annotated[float | None, Form()] = None,
    location_name: Annotated[str, Form()] = "",
+    rotation: Annotated[int, Form()] = 0,
 ) -> Response:
    filename = file.filename or "photo.jpg"
    suffix = Path(filename).suffix.lower()
-    if suffix not in {".jpg", ".jpeg"}:
-        raise HTTPException(status_code=415, detail="This version supports JPG and JPEG files only.")
+    if suffix not in SUPPORTED_EXTENSIONS:
+        raise HTTPException(
+            status_code=415,
+            detail=f"This format is disabled. Enabled format groups: {ENABLED_FORMAT_LABEL}.",
+        )
+    if rotation not in {0, 90, 180, 270}:
+        raise HTTPException(status_code=422, detail="Rotation must be 0, 90, 180, or 270 degrees.")
+    if rotation and suffix not in PIXEL_ROTATION_EXTENSIONS:
+        raise HTTPException(
+            status_code=422,
+            detail=f"Pixel rotation is not supported for {_format_name(suffix)} files.",
+        )

    exif_datetime, xmp_date, precision_label = _normalise_datetime(
        precision=precision,
@@ -606,8 +1126,17 @@ async def process_photo(

    with tempfile.TemporaryDirectory(prefix="photo-date-editor-") as temp_dir:
        temp_path = Path(temp_dir) / f"working{suffix}"
-        await _save_upload(file, temp_path)
+        upload_started = time.perf_counter()
+        await _save_upload(file, temp_path, suffix)
+        upload_seconds = time.perf_counter() - upload_started
+        rotation_mode = "none"
+        rotation_seconds = 0.0
+        if rotation:
+            rotation_started = time.perf_counter()
+            rotation_mode = _rotate_pixels(temp_path, suffix, rotation)
+            rotation_seconds = time.perf_counter() - rotation_started

+        supports_iptc = suffix in IPTC_EXTENSIONS
        command = [
            "exiftool",
            "-overwrite_original",
@@ -623,10 +1152,12 @@ async def process_photo(
            f"-XMP-photoshop:Instructions=Photo Date Editor precision: {precision_label}; time: {time_label}",
            "-EXIF:ImageDescription=",
            "-XMP-dc:Description=",
-            "-IPTC:Caption-Abstract=",
            "-XMP-dc:Subject=",
-            "-IPTC:Keywords=",
        ]
+        if supports_iptc:
+            command.extend(["-IPTC:Caption-Abstract=", "-IPTC:Keywords="])
+        if rotation:
+            command.extend(["-EXIF:Orientation=1", "-XMP-tiff:Orientation=1"])

        clean_description = description.strip()
        if clean_description:
@@ -634,13 +1165,15 @@ async def process_photo(
                [
                    f"-EXIF:ImageDescription={clean_description}",
                    f"-XMP-dc:Description={clean_description}",
-                    f"-IPTC:Caption-Abstract={clean_description}",
                ]
            )
+            if supports_iptc:
+                command.append(f"-IPTC:Caption-Abstract={clean_description}")

        for keyword in keywords:
            command.append(f"-XMP-dc:Subject+={keyword}")
-            command.append(f"-IPTC:Keywords+={keyword}")
+            if supports_iptc:
+                command.append(f"-IPTC:Keywords+={keyword}")

        if gps_action == "clear":
            command.extend(
@@ -675,26 +1208,52 @@ async def process_photo(
        command.append(str(temp_path))

        logger.info("Processing %s with precision %s", filename, precision)
+        exiftool_started = time.perf_counter()
        completed = subprocess.run(
            command,
            capture_output=True,
            text=True,
-            timeout=90,
+            timeout=180 if suffix in RAW_EXTENSIONS else 90,
            check=False,
        )
+        exiftool_seconds = time.perf_counter() - exiftool_started
        if completed.returncode != 0:
            logger.error("ExifTool failed: %s", completed.stderr.strip())
            raise HTTPException(status_code=500, detail="ExifTool could not update this image.")

+        response_started = time.perf_counter()
        updated_bytes = temp_path.read_bytes()
+        response_read_seconds = time.perf_counter() - response_started
+        logger.info(
+            "Processed %s: upload %.2fs, rotation %.2fs (%s), ExifTool %.2fs, response read %.2fs",
+            filename,
+            upload_seconds,
+            rotation_seconds,
+            rotation_mode,
+            exiftool_seconds,
+            response_read_seconds,
+        )

-    return Response(
-        content=updated_bytes,
-        media_type="image/jpeg",
+    def response_chunks() -> Any:
+        chunk_size = 256 * 1024
+        for offset in range(0, len(updated_bytes), chunk_size):
+            yield updated_bytes[offset:offset + chunk_size]
+
+    return StreamingResponse(
+        response_chunks(),
+        media_type=MEDIA_TYPES[suffix],
        headers={
            "Content-Disposition": f'inline; filename="{Path(filename).name}"',
+            "Content-Length": str(len(updated_bytes)),
            "Cache-Control": "no-store",
            "X-Date-Precision": precision_label,
+            "X-Pixel-Rotation": rotation_mode,
+            "Server-Timing": (
+                f'upload;dur={upload_seconds * 1000:.1f}, '
+                f'rotation;dur={rotation_seconds * 1000:.1f}, '
+                f'exiftool;dur={exiftool_seconds * 1000:.1f}, '
+                f'read;dur={response_read_seconds * 1000:.1f}'
+            ),
        },
    )

@@ -13,6 +13,9 @@ const state = {
  mapMarker: null,
  locationDirty: false,
  favoriteLocations: [],
+  configPromise: null,
+  enabledExtensions: new Set(),
+  enabledFormatLabel: '',
 };

 const $ = (selector) => document.querySelector(selector);
@@ -20,6 +23,7 @@ const $$ = (selector) => [...document.querySelectorAll(selector)];

 const elements = {
  appName: $('#app-name'),
+  appSubtitle: $('#app-subtitle'),
  openButtons: [$('#open-folder'), $('#open-folder-top'), $('#open-folder-center')],
  rescan: $('#rescan-folder'),
  folderName: $('#folder-name'),
@@ -36,6 +40,7 @@ const elements = {
  viewerEmpty: $('#viewer-empty'),
  viewerContent: $('#viewer-content'),
  preview: $('#photo-preview'),
+  rotationStatus: $('#rotation-status'),
  filename: $('#current-filename'),
  filesize: $('#current-filesize'),
  position: $('#viewer-position'),
@@ -113,6 +118,32 @@ function formatBytes(bytes) {
  return `${(bytes / 1024 ** 2).toFixed(1)} MB`;
 }

+function formatType(filename) {
+  const extension = filename.split('.').pop()?.toLowerCase() || '';
+  if (extension === 'jpg' || extension === 'jpeg') return 'JPG';
+  if (extension === 'png') return 'PNG';
+  if (extension === 'tif' || extension === 'tiff') return 'TIFF';
+  if (extension === 'heic' || extension === 'heif' || extension === 'hif') return 'HEIF';
+  if (extension === 'dng') return 'DNG';
+  if (extension === 'cr2') return 'CR2';
+  if (extension === 'cr3') return 'CR3';
+  if (extension === 'nef') return 'NEF';
+  if (extension === 'nrw') return 'NRW';
+  if (extension === 'arw') return 'ARW';
+  if (extension === 'arq') return 'ARQ';
+  return extension.toUpperCase();
+}
+
+function requiresServerPreview(photo) {
+  return ['TIFF', 'HEIF', 'DNG', 'CR2', 'CR3', 'NEF', 'NRW', 'ARW', 'ARQ'].includes(photo.format);
+}
+
+function isEnabledFilename(filename) {
+  const dot = filename.lastIndexOf('.');
+  if (dot < 0) return false;
+  return state.enabledExtensions.has(filename.slice(dot).toLowerCase());
+}
+
 function storageKey() {
  return state.directoryHandle ? `photo-date-editor:${state.directoryHandle.name}` : null;
 }
@@ -139,14 +170,13 @@ function saveFolderState() {
 }

 async function openFolder() {
-  await loadFavoriteLocations();
-
-  if (!isSupported()) {
-    showToast('Use a current Chromium browser over HTTPS. Folder access is unavailable here.', true);
-    return;
-  }
-
  try {
+    await loadAppConfig();
+    await loadFavoriteLocations();
+    if (!isSupported()) {
+      showToast('Use a current Chromium browser over HTTPS. Folder access is unavailable here.', true);
+      return;
+    }
    const handle = await window.showDirectoryPicker({ mode: 'readwrite', id: 'photo-date-editor' });
    const permission = await handle.requestPermission({ mode: 'readwrite' });
    if (permission !== 'granted') throw new Error('Read/write permission was not granted.');
@@ -164,13 +194,14 @@ async function scanFolder() {
  const photos = [];

  for await (const [name, handle] of state.directoryHandle.entries()) {
-    if (handle.kind !== 'file' || !/\.(jpe?g)$/i.test(name)) continue;
+    if (handle.kind !== 'file' || !isEnabledFilename(name)) continue;
    const file = await handle.getFile();
    const previous = stored.photos?.[name] || {};
    const unchanged = !previous.lastModified || previous.lastModified === file.lastModified;
    photos.push({
      name,
      handle,
+      format: formatType(name),
      size: file.size,
      lastModified: file.lastModified,
      status: unchanged ? (previous.status || 'pending') : 'pending',
@@ -178,6 +209,7 @@ async function scanFolder() {
      fileValues: null,
      metadataLoaded: false,
      metadataPresent: false,
+      pendingRotation: 0,
    });
  }

@@ -202,7 +234,7 @@ async function scanFolder() {
  } else {
    elements.viewerContent.classList.add('hidden');
    elements.viewerEmpty.classList.remove('hidden');
-    showToast('No JPG or JPEG files were found in that folder.', true);
+    showToast(`No enabled ${state.enabledFormatLabel} files were found in that folder.`, true);
  }
 }

@@ -213,14 +245,34 @@ function clearObjectUrls() {
  state.thumbUrls.clear();
 }

-async function getThumbUrl(photo) {
+async function getPreviewUrl(photo, suppliedFile = null) {
  if (state.thumbUrls.has(photo.name)) return state.thumbUrls.get(photo.name);
-  const file = await photo.handle.getFile();
-  const url = URL.createObjectURL(file);
+  const file = suppliedFile || await photo.handle.getFile();
+  let previewBlob = file;
+
+  if (requiresServerPreview(photo)) {
+    const payload = new FormData();
+    payload.append('file', file, photo.name);
+    const response = await fetch('/api/preview', { method: 'POST', body: payload });
+    if (!response.ok) {
+      let message = `Preview failed (${response.status}).`;
+      try { message = (await response.json()).detail || message; } catch {}
+      throw new Error(message);
+    }
+    previewBlob = await response.blob();
+  }
+
+  const url = URL.createObjectURL(previewBlob);
  state.thumbUrls.set(photo.name, url);
  return url;
 }

+async function getThumbUrl(photo) {
+  if (state.thumbUrls.has(photo.name)) return state.thumbUrls.get(photo.name);
+  if (requiresServerPreview(photo)) return null;
+  return getPreviewUrl(photo);
+}
+
 function statusSymbol(status) {
  if (status === 'saved') return '✓';
  if (status === 'skipped') return '→';
@@ -243,6 +295,8 @@ function visiblePhotoEntries() {
      const statusDifference = statusSortOrder[a.photo.status] - statusSortOrder[b.photo.status];
      return statusDifference || naturalCompare(a.photo.name, b.photo.name);
    });
+  } else if (elements.sortSelect.value === 'format') {
+    entries.sort((a, b) => naturalCompare(a.photo.format, b.photo.format) || naturalCompare(a.photo.name, b.photo.name));
  } else {
    entries.sort((a, b) => naturalCompare(a.photo.name, b.photo.name));
  }
@@ -264,12 +318,16 @@ function renderFileList() {
    row.className = `file-row${index === state.currentIndex ? ' active' : ''}`;
    row.dataset.index = String(index);
    row.innerHTML = `
-      <div class="file-thumb" aria-hidden="true"></div>
-      <div class="file-meta"><strong>${escapeHtml(photo.name)}</strong><span>${index + 1} / ${state.photos.length} · ${formatBytes(photo.size)}</span></div>
+      <div class="file-thumb format-placeholder" aria-hidden="true">${escapeHtml(photo.format)}</div>
+      <div class="file-meta">
+        <strong>${escapeHtml(photo.name)}</strong>
+        <span class="file-details"><span>${index + 1} / ${state.photos.length}</span><span>${formatBytes(photo.size)}</span><span class="format-badge">${escapeHtml(photo.format)}</span></span>
+      </div>
      <span class="file-state ${photo.status}" title="${photo.status}">${statusSymbol(photo.status)}</span>`;
    row.addEventListener('click', () => selectPhoto(index));
    elements.fileList.appendChild(row);
    getThumbUrl(photo).then((url) => {
+      if (!url || !row.isConnected) return;
      const placeholder = row.querySelector('.file-thumb');
      const image = document.createElement('img');
      image.className = 'file-thumb';
@@ -304,7 +362,10 @@ function formatMetadataSummary(values) {
 function updatePhotoStatus(photo) {
  const values = photo.fileValues || photo.values;
  if (photo.status === 'saved') {
-    setSaveStatus('saved', 'Previously saved', formatMetadataSummary(values));
+    const timing = photo.lastSaveTiming
+      ? ` · ${formatSaveTiming(photo.lastSaveTiming)}`
+      : '';
+    setSaveStatus('saved', 'Previously saved', `${formatMetadataSummary(values)}${timing}`);
  } else if (photo.status === 'skipped') {
    setSaveStatus('skipped', 'Previously skipped', 'No metadata was written to this file.');
  } else if (photo.status === 'failed') {
@@ -316,6 +377,13 @@ function updatePhotoStatus(photo) {
  }
 }

+function formatSaveTiming(timing) {
+  if (timing.streamed) {
+    return `${timing.total.toFixed(1)}s total · ${timing.firstByte.toFixed(1)}s to first byte · ${timing.streamWrite.toFixed(1)}s stream/write`;
+  }
+  return `${timing.total.toFixed(1)}s total · ${timing.serverTransfer.toFixed(1)}s server/transfer · ${timing.localWrite.toFixed(1)}s local write`;
+}
+
 async function readPhotoMetadata(photo, file) {
  if (photo.metadataLoaded) return;
  const payload = new FormData();
@@ -326,7 +394,10 @@ async function readPhotoMetadata(photo, file) {
    try { message = (await response.json()).detail || message; } catch {}
    throw new Error(message);
  }
-  const data = await response.json();
+  applyMetadataResult(photo, await response.json());
+}
+
+function applyMetadataResult(photo, data) {
  photo.metadataLoaded = true;
  photo.metadataPresent = Boolean(data.hasMetadata);
  photo.fileValues = data.hasMetadata ? data.values : null;
@@ -339,6 +410,34 @@ async function readPhotoMetadata(photo, file) {
  }
 }

+async function inspectServerPreviewPhoto(photo, file) {
+  const payload = new FormData();
+  payload.append('file', file, photo.name);
+  const response = await fetch('/api/inspect', { method: 'POST', body: payload });
+  if (!response.ok) {
+    let message = `Photo inspection failed (${response.status}).`;
+    try { message = (await response.json()).detail || message; } catch {}
+    throw new Error(message);
+  }
+  const buffer = await response.arrayBuffer();
+  if (buffer.byteLength < 5) throw new Error('The server returned an incomplete inspection response.');
+  const view = new DataView(buffer);
+  const metadataLength = view.getUint32(0, false);
+  if (metadataLength < 2 || metadataLength > buffer.byteLength - 4) {
+    throw new Error('The server returned an invalid inspection response.');
+  }
+  const metadataBytes = new Uint8Array(buffer, 4, metadataLength);
+  const data = JSON.parse(new TextDecoder().decode(metadataBytes));
+  const previewBytes = new Uint8Array(buffer, 4 + metadataLength);
+  if (!previewBytes.length) throw new Error('The server returned no preview image.');
+  const oldUrl = state.thumbUrls.get(photo.name);
+  if (oldUrl) URL.revokeObjectURL(oldUrl);
+  const previewUrl = URL.createObjectURL(new Blob([previewBytes], { type: 'image/jpeg' }));
+  state.thumbUrls.set(photo.name, previewUrl);
+  applyMetadataResult(photo, data);
+  return previewUrl;
+}
+
 async function selectPhoto(index, force = false) {
  if (index < 0 || index >= state.photos.length || (state.processing && !force)) return;
  captureCurrentValues();
@@ -346,13 +445,13 @@ async function selectPhoto(index, force = false) {
  const selectionToken = ++state.selectionToken;
  const photo = state.photos[index];
  const file = await photo.handle.getFile();
-  if (state.objectUrl) URL.revokeObjectURL(state.objectUrl);
-  state.objectUrl = URL.createObjectURL(file);
-  elements.preview.src = state.objectUrl;
+  elements.preview.removeAttribute('src');
  elements.filename.textContent = photo.name;
-  elements.filesize.textContent = `${formatBytes(file.size)} · modified ${new Date(file.lastModified).toLocaleString()}`;
+  elements.filesize.textContent = `${photo.format} · ${formatBytes(file.size)} · modified ${new Date(file.lastModified).toLocaleString()}`;
  elements.position.textContent = `${index + 1} / ${state.photos.length}`;
-  resetView();
+  state.zoom = 1;
+  state.rotation = normalizeRotation(photo.pendingRotation || 0);
+  applyView();
  restoreValues(photo.values);
  updatePhotoStatus(photo);
  updateNavigation();
@@ -360,8 +459,30 @@ async function selectPhoto(index, force = false) {
  const active = elements.fileList.querySelector('.file-row.active');
  active?.scrollIntoView({ block: 'nearest' });

+  try {
+    if (requiresServerPreview(photo)) {
+      setSaveStatus('loading', `Rendering ${photo.format} preview…`, photo.name);
+    }
+    const serverInspectionNeeded = requiresServerPreview(photo)
+      && (!state.thumbUrls.has(photo.name) || !photo.metadataLoaded);
+    const previewUrl = serverInspectionNeeded
+      ? await inspectServerPreviewPhoto(photo, file)
+      : await getPreviewUrl(photo, file);
+    if (selectionToken !== state.selectionToken || state.currentIndex !== index) return;
+    elements.preview.src = previewUrl;
+    if (serverInspectionNeeded) {
+      if (!formHasUserInput() && photo.values) restoreValues(photo.values);
+      updatePhotoStatus(photo);
+    }
+    renderFileList();
+  } catch (error) {
+    if (selectionToken === state.selectionToken && state.currentIndex === index) {
+      setSaveStatus('failed', 'Could not render preview', error.message || photo.name);
+    }
+  }
+
  if (!photo.metadataLoaded) {
-    if (!photo.values) setSaveStatus('loading', 'Reading EXIF metadata…', photo.name);
+    if (!photo.values) setSaveStatus('loading', 'Reading image metadata…', photo.name);
    try {
      await readPhotoMetadata(photo, file);
      if (selectionToken !== state.selectionToken || state.currentIndex !== index) return;
@@ -509,7 +630,11 @@ async function savePhoto(moveNext) {
      payload.append('longitude', values.longitude);
      payload.append('location_name', values.locationName);
    }
+    const rotationToSave = supportsPixelRotation(photo) ? normalizeRotation(state.rotation) : 0;
+    payload.append('rotation', String(rotationToSave));

+    const saveStarted = performance.now();
+    setSaveStatus('saving', 'Uploading and applying changes…', `${photo.name} · large files can take a while`);
    const response = await fetch('/api/process', { method: 'POST', body: payload });
    if (!response.ok) {
      let message = `Save failed (${response.status}).`;
@@ -517,12 +642,57 @@ async function savePhoto(moveNext) {
      throw new Error(message);
    }

-    const updatedBlob = await response.blob();
+    const responseReceivedAt = performance.now();
+    const rotationMode = response.headers.get('x-pixel-rotation') || 'none';
+    const firstByteSeconds = (responseReceivedAt - saveStarted) / 1000;
    const writable = await photo.handle.createWritable({ keepExistingData: false });
+    let timing;
+    let responseReader = null;
    try {
-      await writable.write(updatedBlob);
-      await writable.close();
+      if (response.body && typeof response.body.getReader === 'function') {
+        responseReader = response.body.getReader();
+        const expectedBytes = Number(response.headers.get('content-length')) || 0;
+        let receivedBytes = 0;
+        let lastProgressUpdate = 0;
+        while (true) {
+          const { done, value } = await responseReader.read();
+          if (done) break;
+          await writable.write(value);
+          receivedBytes += value.byteLength;
+          const now = performance.now();
+          if (now - lastProgressUpdate >= 200) {
+            const progress = expectedBytes
+              ? `${Math.min(100, (receivedBytes / expectedBytes) * 100).toFixed(0)}% · ${formatBytes(receivedBytes)} / ${formatBytes(expectedBytes)}`
+              : `${formatBytes(receivedBytes)} received`;
+            setSaveStatus('saving', 'Streaming updated file…', `${photo.name} · ${progress}`);
+            lastProgressUpdate = now;
+          }
+        }
+        await writable.close();
+        const completedAt = performance.now();
+        timing = {
+          streamed: true,
+          total: (completedAt - saveStarted) / 1000,
+          firstByte: firstByteSeconds,
+          streamWrite: (completedAt - responseReceivedAt) / 1000,
+        };
+      } else {
+        const updatedBlob = await response.blob();
+        const serverAndTransferSeconds = (performance.now() - saveStarted) / 1000;
+        setSaveStatus('saving', 'Writing updated file locally…', `${photo.name} · buffered compatibility mode`);
+        const localWriteStarted = performance.now();
+        await writable.write(updatedBlob);
+        await writable.close();
+        const localWriteSeconds = (performance.now() - localWriteStarted) / 1000;
+        timing = {
+          streamed: false,
+          total: serverAndTransferSeconds + localWriteSeconds,
+          serverTransfer: serverAndTransferSeconds,
+          localWrite: localWriteSeconds,
+        };
+      }
    } catch (error) {
+      if (responseReader) await responseReader.cancel().catch(() => {});
      await writable.abort().catch(() => {});
      throw error;
    }
@@ -537,9 +707,19 @@ async function savePhoto(moveNext) {
    photo.fileValues = { ...savedValues };
    photo.metadataLoaded = true;
    photo.metadataPresent = true;
+    photo.pendingRotation = 0;
+    state.rotation = 0;
+    photo.lastSaveTiming = timing;
    saveFolderState();
-    setSaveStatus('saved', 'Saved in place', formatMetadataSummary(savedValues));
-    showToast(`Saved ${photo.name}`);
+    setSaveStatus(
+      'saved',
+      'Saved in place',
+      `${formatMetadataSummary(savedValues)} · ${formatSaveTiming(timing)}`,
+    );
+    const rotationNote = rotationMode === 'jpeg-reencoded'
+      ? ' · rotation applied; JPEG re-encoded at high quality'
+      : rotationMode !== 'none' ? ' · pixel rotation applied' : '';
+    showToast(`Saved ${photo.name}: ${formatSaveTiming(timing)}${rotationNote}`);
    updateProgress();

    const oldThumb = state.thumbUrls.get(photo.name);
@@ -907,8 +1087,45 @@ async function searchAddress() {

 function applyView() {
  elements.preview.style.transform = `scale(${state.zoom}) rotate(${state.rotation}deg)`;
+  updateRotationStatus();
+}
+
+function normalizeRotation(rotation) {
+  return ((Number(rotation) % 360) + 360) % 360;
+}
+
+function supportsPixelRotation(photo) {
+  return Boolean(photo && ['JPG', 'PNG', 'TIFF'].includes(photo.format));
+}
+
+function updateRotationStatus() {
+  const rotation = normalizeRotation(state.rotation);
+  const photo = state.photos[state.currentIndex];
+  elements.rotationStatus.classList.toggle('hidden', rotation === 0 || !photo);
+  if (!rotation || !photo) return;
+  const supported = supportsPixelRotation(photo);
+  elements.rotationStatus.classList.toggle('preview-only', !supported);
+  elements.rotationStatus.textContent = supported
+    ? `Rotation ${rotation}° will be applied to the image when saved`
+    : `Preview rotation ${rotation}° · ${photo.format} files are not altered`;
+}
+
+function setPendingRotation(rotation) {
+  state.rotation = normalizeRotation(rotation);
+  const photo = state.photos[state.currentIndex];
+  if (photo) photo.pendingRotation = state.rotation;
+  applyView();
+}
+
+function fitView() {
+  state.zoom = 1;
+  applyView();
+}
+
+function resetView() {
+  state.zoom = 1;
+  setPendingRotation(0);
 }
-function resetView() { state.zoom = 1; state.rotation = 0; applyView(); }

 for (const button of elements.openButtons) button.addEventListener('click', openFolder);
 elements.rescan.addEventListener('click', scanFolder);
@@ -934,9 +1151,9 @@ for (const input of [elements.latitude, elements.longitude]) {
 elements.locationName.addEventListener('input', markLocationDirty);
 elements.zoomOut.addEventListener('click', () => { state.zoom = Math.max(.25, state.zoom - .15); applyView(); });
 elements.zoomIn.addEventListener('click', () => { state.zoom = Math.min(4, state.zoom + .15); applyView(); });
-elements.fit.addEventListener('click', resetView);
-elements.rotateLeft.addEventListener('click', () => { state.rotation -= 90; applyView(); });
-elements.rotateRight.addEventListener('click', () => { state.rotation += 90; applyView(); });
+elements.fit.addEventListener('click', fitView);
+elements.rotateLeft.addEventListener('click', () => setPendingRotation(state.rotation - 90));
+elements.rotateRight.addEventListener('click', () => setPendingRotation(state.rotation + 90));
 elements.resetView.addEventListener('click', resetView);
 elements.timeMode.addEventListener('change', () => elements.timeField.classList.toggle('hidden', elements.timeMode.value !== 'known'));
 elements.description.addEventListener('input', () => { elements.descriptionCount.textContent = `${elements.description.value.length} / 2000`; captureCurrentValues(); });
@@ -972,16 +1189,38 @@ window.addEventListener('keydown', (event) => {
  else if (!typing && event.key.toLowerCase() === 'c') copyPreviousValues();
 });

+function loadAppConfig() {
+  if (!state.configPromise) {
+    state.configPromise = (async () => {
+      const response = await fetch('/api/config', { cache: 'no-store' });
+      if (!response.ok) throw new Error(`Configuration request failed (${response.status}).`);
+      const config = await response.json();
+      const extensions = Array.isArray(config.enabledExtensions) ? config.enabledExtensions : [];
+      if (!extensions.length) throw new Error('The server has no enabled photo formats.');
+      const pageTitle = config.appTitle || config.appName;
+      elements.appName.textContent = pageTitle;
+      elements.appSubtitle.textContent = config.appSubtitle;
+      document.title = pageTitle;
+      state.mapConfig = config;
+      state.enabledExtensions = new Set(extensions.map((value) => String(value).toLowerCase()));
+      state.enabledFormatLabel = config.enabledFormatLabel || 'photo';
+      return config;
+    })();
+  }
+  return state.configPromise;
+}
+
 async function initialise() {
  try {
-    const response = await fetch('/api/config', { cache: 'no-store' });
-    if (response.ok) {
-      const config = await response.json();
-      elements.appName.textContent = config.appName;
-      document.title = config.appName;
-      state.mapConfig = config;
-    }
-  } catch {}
+    await loadAppConfig();
+  } catch (error) {
+    setSaveStatus('failed', 'Configuration unavailable', error.message || 'Could not load enabled formats.');
+    for (const button of elements.openButtons) button.disabled = true;
+  }
+
+  // Favorite locations are server-side shared data and must be loaded on every page start,
+  // independently of whether the user opens a photo folder in this browser session.
+  await loadFavoriteLocations();

  if (!isSupported()) {
    setSaveStatus('failed', 'Browser folder access unavailable', 'Use a current Chromium browser over HTTPS.');
@@ -16,7 +16,7 @@
        <div class="brand-mark" aria-hidden="true">◫</div>
        <div>
          <h1 id="app-name">Photo Date Editor</h1>
-          <p>Local folder · in-place JPEG metadata</p>
+          <p id="app-subtitle">Loading enabled photo formats…</p>
        </div>
      </div>
      <div class="top-actions">
@@ -70,10 +70,11 @@
            <select id="sort-select" class="input filter" aria-label="Sort photos" disabled>
              <option value="filename">Sort: Filename</option>
              <option value="status">Sort: Status</option>
+              <option value="format">Sort: Format</option>
            </select>
          </div>
          <div id="file-list" class="file-list" aria-live="polite">
-            <div class="empty-list">Choose a folder containing JPG or JPEG photos.</div>
+            <div class="empty-list">Choose a folder containing an enabled photo format.</div>
          </div>
        </section>

@@ -93,6 +94,7 @@
        <div id="viewer-content" class="viewer-content hidden">
          <div class="image-stage">
            <img id="photo-preview" alt="Current scanned photograph">
+            <div id="rotation-status" class="rotation-status hidden" role="status"></div>
          </div>
          <div class="viewer-tools">
            <div class="tool-group">
@@ -105,8 +107,8 @@
              <span id="current-filesize">—</span>
            </div>
            <div class="tool-group">
-              <button id="rotate-left" class="icon-button" title="Rotate preview left">↶</button>
-              <button id="rotate-right" class="icon-button" title="Rotate preview right">↷</button>
+              <button id="rotate-left" class="icon-button" title="Rotate left">↶</button>
+              <button id="rotate-right" class="icon-button" title="Rotate right">↷</button>
              <button id="reset-view" class="icon-button" title="Reset preview">⟳</button>
            </div>
          </div>
@@ -5,5 +5,5 @@
  "display": "standalone",
  "background_color": "#0d1218",
  "theme_color": "#121820",
-  "description": "Edit dates, descriptions, and keywords in scanned JPEG photos."
+  "description": "Edit dates, descriptions, keywords, and locations in common images, DNG, and Canon RAW photos."
 }
@@ -1,4 +1,4 @@
-const CACHE_NAME = 'photo-date-editor-v4-2';
+const CACHE_NAME = 'photo-date-editor-v9-2';
 const SHELL = ['/', '/styles.css', '/app.js', '/manifest.webmanifest', '/vendor/leaflet/leaflet.css', '/vendor/leaflet/leaflet.js'];

 self.addEventListener('install', (event) => {
@@ -18,20 +18,20 @@
 }

 * { box-sizing: border-box; }
-html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
+html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
 button, input, select, textarea { font: inherit; }
 button { color: inherit; }

-.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
-.topbar { height: 70px; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #151c24, #111820); }
+.app-shell { width: 100%; height: 100vh; height: 100dvh; min-height: 0; overflow: hidden; display: flex; flex-direction: column; }
+.topbar { flex: 0 0 70px; height: 70px; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #151c24, #111820); }
 .brand { display: flex; align-items: center; gap: 12px; }
 .brand-mark { width: 34px; height: 34px; border: 1px solid #5d8df6; color: #8aafff; border-radius: 7px; display: grid; place-items: center; font-weight: 700; }
 .brand h1 { margin: 0; font-size: 20px; }
 .brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
 .top-actions { display: flex; gap: 10px; }

-.workspace { flex: 1; min-height: calc(100vh - 70px); display: grid; grid-template-columns: minmax(260px, 320px) minmax(480px, 1fr) minmax(330px, 420px); overflow: hidden; }
-.sidebar { background: var(--panel); min-height: 0; display: flex; flex-direction: column; }
+.workspace { flex: 1 1 auto; min-height: 0; display: grid; grid-template-columns: minmax(260px, 320px) minmax(480px, 1fr) minmax(330px, 420px); overflow: hidden; }
+.sidebar { background: var(--panel); min-height: 0; overflow: hidden; display: flex; flex-direction: column; }
 .left-panel { border-right: 1px solid var(--line); }
 .right-panel { border-left: 1px solid var(--line); }
 .panel-section { padding: 18px; border-bottom: 1px solid var(--line-soft); }
@@ -58,21 +58,26 @@ button { color: inherit; }
 .file-row:hover { background: rgba(255,255,255,.045); }
 .file-row.active { background: var(--primary-soft); outline: 1px solid rgba(79,135,255,.4); }
 .file-thumb { width: 50px; height: 44px; object-fit: cover; background: #0b1015; border-radius: 5px; }
+.file-thumb.format-placeholder { display: grid; place-items: center; border: 1px solid var(--border); color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .06em; }
 .file-meta { min-width: 0; }
-.file-meta strong, .file-meta span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.file-meta strong { font-size: 13px; }.file-meta span { margin-top: 4px; color: var(--muted); font-size: 11px; }
+.file-meta strong { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
+.file-details { margin-top: 4px; display: flex; align-items: center; gap: 6px; min-width: 0; color: var(--muted); font-size: 11px; white-space: nowrap; }
+.file-details > span:not(.format-badge) { overflow: hidden; text-overflow: ellipsis; }
+.format-badge { flex: 0 0 auto; padding: 1px 5px; border: 1px solid var(--border); border-radius: 999px; color: var(--text); font-size: 9px; font-weight: 800; letter-spacing: .05em; }
 .file-state { width: 19px; height: 19px; display: grid; place-items: center; border-radius: 50%; font-size: 11px; border: 1px solid #536071; color: #8390a0; }
 .file-state.saved { color: #092b1b; background: var(--success); border-color: var(--success); font-weight: 800; }
 .file-state.skipped { color: #2e2111; background: #c49a5a; border-color: #c49a5a; font-weight: 800; }
 .file-state.failed { color: white; background: var(--danger); border-color: var(--danger); }
 .sidebar-footer, .right-footer { padding: 16px 18px; border-top: 1px solid var(--line-soft); margin-top: auto; }

-.viewer-panel { min-width: 0; min-height: 0; display: flex; background: #0a0f14; }
+.viewer-panel { min-width: 0; min-height: 0; overflow: hidden; display: flex; background: #0a0f14; }
 .viewer-empty { margin: auto; text-align: center; max-width: 470px; padding: 35px; }
 .empty-icon { font-size: 48px; color: #6685ae; }.viewer-empty h2 { margin: 15px 0 7px; }.viewer-empty p { color: var(--muted); line-height: 1.6; margin: 0 0 22px; }
-.viewer-content { width: 100%; min-height: 0; display: grid; grid-template-rows: minmax(300px, 1fr) auto 76px; }
-.image-stage { min-height: 0; display: grid; place-items: center; overflow: auto; padding: 18px; background-image: radial-gradient(circle at 50% 40%, #18212a 0, #0a0f14 68%); }
+.viewer-content { width: 100%; height: 100%; min-height: 0; overflow: hidden; display: grid; grid-template-rows: minmax(220px, 1fr) auto 76px; }
+.image-stage { position: relative; min-height: 0; display: grid; place-items: center; overflow: auto; padding: 18px; background-image: radial-gradient(circle at 50% 40%, #18212a 0, #0a0f14 68%); }
 .image-stage img { display: block; max-width: 100%; max-height: 100%; object-fit: contain; box-shadow: var(--shadow); transition: transform .15s ease; transform-origin: center; }
+.rotation-status { position: absolute; left: 18px; bottom: 18px; max-width: calc(100% - 36px); padding: 7px 10px; border: 1px solid rgba(84,201,138,.55); border-radius: 7px; background: rgba(12,20,27,.9); color: #bcebd0; font-size: 11px; box-shadow: var(--shadow); }
+.rotation-status.preview-only { border-color: rgba(228,179,92,.55); color: #f0d59f; }
 .viewer-tools { border-top: 1px solid var(--line-soft); min-height: 58px; display: grid; grid-template-columns: 1fr minmax(170px, auto) 1fr; align-items: center; padding: 10px 18px; gap: 18px; background: #10171f; }
 .viewer-tools > :last-child { justify-self: end; }
 .tool-group { display: flex; align-items: center; gap: 7px; }
@@ -108,8 +113,22 @@ fieldset { border: 0; padding: 0; margin: 0 0 22px; } legend { font-weight: 650;
  .workspace { grid-template-columns: 250px minmax(380px, 1fr) 340px; }
 }
@media (max-width: 850px) {
+  html, body { height: auto; min-height: 100%; overflow: auto; }
+  .app-shell { height: auto; min-height: 100vh; min-height: 100dvh; overflow: visible; }
  .topbar { height: auto; min-height: 70px; flex-wrap: wrap; gap: 10px; padding: 12px; }.brand p { display: none; }
-  .workspace { display: block; overflow: visible; }.left-panel, .right-panel { border: 0; }.left-panel { max-height: 480px; }.viewer-panel { min-height: 620px; }.right-panel { min-height: 600px; }
+  .workspace { flex: none; min-height: 0; display: block; overflow: visible; }.left-panel, .right-panel { border: 0; overflow: visible; }.left-panel { max-height: 480px; }.viewer-panel { min-height: 620px; overflow: visible; }.viewer-content { min-height: 620px; overflow: visible; }.right-panel { min-height: 600px; }
+}
+
+@media (min-width: 851px) and (max-height: 800px) {
+  .topbar { flex-basis: 60px; height: 60px; }
+  .panel-section { padding: 13px 16px; }
+  .image-stage { padding: 10px; }
+  .viewer-content { grid-template-rows: minmax(180px, 1fr) auto 66px; }
+  .viewer-tools { min-height: 52px; padding: 7px 14px; }
+  .navigation-bar { padding: 10px 14px; }
+  .tab { padding-block: 13px 10px; }
+  #metadata-form { padding: 15px 18px; }
+  .sidebar-footer, .right-footer { padding: 12px 16px; }
 }

 /* v0.4 location editor */
@@ -10,6 +10,9 @@ services:
    environment:
      APP_URL: "${APP_URL:-http://localhost:8080}"
      APP_NAME: "${APP_NAME:-Photo Date Editor}"
+      APP_TITLE: "${APP_TITLE:-}"
+      APP_SUBTITLE: "${APP_SUBTITLE:-}"
+      ENABLED_FORMATS: "${ENABLED_FORMATS:-jpg,png,tiff,heif,dng,canon}"
      MAX_UPLOAD_MB: "${MAX_UPLOAD_MB:-150}"
      LOG_LEVEL: "${LOG_LEVEL:-INFO}"
      DATA_DIR: "/data"
@@ -1,3 +1,6 @@
 fastapi>=0.116,<1
 uvicorn[standard]>=0.35,<1
 python-multipart>=0.0.20,<1
+Pillow>=11.3,<13
+pillow-heif>=1.1,<2
+rawpy>=0.25,<1
Author	SHA1	Message	Date
dmo	1f11aa28b4	Update README.md Updated after namechange	2026-08-04 13:14:14 +02:00
dmo	6e8da87271	Update README.md Added AI disclaimer	2026-08-04 10:37:24 +02:00
dmo	ad52a95d4f	Add saved pixel rotation for JPG, PNG and TIFF v0.9.2	2026-07-25 10:42:25 +02:00
dmo	34602e4ebd	Fix desktop viewport layout and navigation visibility v0.9.1	2026-07-25 09:27:10 +02:00
dmo	6e8c30c1d4	Add Nikon and Sony RAW support v0.9	2026-07-25 08:41:41 +02:00
dmo	f1704c9822	Stream RAW saves with live progress v0.8.3	2026-07-25 08:38:39 +02:00
dmo	2dee67021e	Add binary RAW inspection and diagnostics v0.8.2	2026-07-25 08:37:29 +02:00
dmo	d17bc6a132	Optimize RAW inspection and add timings v0.8.1	2026-07-25 08:35:22 +02:00
dmo	4e3c442b26	Add Canon CR2 and CR3 support for v0.8	2026-07-25 08:32:24 +02:00
dmo	8ed5490afc	Add configurable formats and lazy decoders, v0.7.1	2026-07-23 21:51:37 +02:00
dmo	b9a0259166	Add DNG support v0.7	2026-07-23 21:33:20 +02:00
dmo	c2640cf75a	Add configurable title and subtitle v0.6.1	2026-07-23 13:18:19 +02:00
dmo	47b8d42295	Added HEIC, HEIF and HIF support v0.6	2026-07-23 12:59:49 +02:00
dmo	3acf6bb7ec	Add PNG and TIFF support v0.5	2026-07-23 11:23:49 +02:00
dmo	0541790dba	Load favorite location on startup v0.4.3	2026-07-23 09:57:52 +02:00