Two related polish items.
1. Heap convert to folder
Closes a long-standing TODO from spec §6.10.
- Backend: POST /heaps/{id}/convert with body
{ target_id, mode: 'move'|'copy', delete_heap: bool }
target_id resolves either as a Folder id or a SourceRoot id (same
convention as /photos/move). For each member photo, dispatches
either shutil.move + photo.folder_id update, or shutil.copy2 +
a new is_duplicate=true Photo row with all metadata copied. Name
collisions on copy use the same " (copy N)" suffix scheme as
/photos/copy. The heap row is optionally deleted on success.
Per-photo failures are collected into the response instead of
aborting the batch.
- Frontend: new HeapConvertDialog with a target-folder dropdown
(currently from sourceFolders.list, sub-folder picking is a
follow-up), move/copy radio, and a "delete heap" checkbox.
HeapsPanel rows get a hover FolderOutput button that opens it.
Toast on success names the verb + count and notes whether the
heap was deleted; invalidates heaps + photos + folders queries.
2. Surface exact-duplicate detection
The scanner already sets Photo.is_duplicate=true when a SHA-256
match is found, but nothing surfaced it. Now:
- Backend list_photos accepts an optional is_duplicate query
param so the frontend can filter duplicates-only views.
- filterStore gains a duplicates: boolean field with setter, URL
sync (?duplicates=true), filtersToParams entry, and a
hasActiveFilters check.
- LeftSidebar gets a new "Duplicates" library node (Copy icon)
that clearAllFilters() + setDuplicates(true). isItemActive
follows the filter so the highlight stays in sync after
external filter changes.
- PhotoThumbnail renders a small dark badge with the Copy icon
bottom-right when photo.is_duplicate. Sits next to the existing
basket / discard badges so the user can spot duplicates at a
glance.
- Photo TS type adds is_duplicate.
Perceptual-hash duplicate detection (re-encoded / resized matches)
is intentionally a follow-up — needs an imagehash dep, a phash
column, a backfill job, and similarity-search endpoint with
hamming-distance grouping. This commit only surfaces what the
scanner already finds via byte-level SHA-256 comparison.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Mulita - Self-Hosted Photo Management Application
A self-hosted, Docker-deployed photo management application inspired by Lightroom's workflow. Mulita provides a fast, keyboard-driven interface to browse, organize, tag, and manage your photo library.
Features
- Photo Organization: Browse photos in a timeline view with virtual scrolling for performance
- Thumbnail Generation: Automatic thumbnail generation for all photo formats including RAW
- Metadata Extraction: Full EXIF/XMP metadata extraction and search
- Keyboard Shortcuts: Lightroom-style keyboard navigation and actions
- File Support: JPEG, PNG, RAW formats (CR2, CR3, NEF, ARW, etc.), HEIC/HEIF, and videos
- Heaps: Temporary collections for organizing photos
- Tags & Ratings: Organize with tags, star ratings, and color labels
- Dark Mode: Photography-optimized dark interface
Tech Stack
Backend
- Python 3.12 with FastAPI
- SQLite with SQLAlchemy (async)
- Celery + Redis for background tasks
- pyvips for fast thumbnail generation
- ExifTool for metadata extraction
Frontend
- React 18 with TypeScript
- Vite for fast development
- TanStack Query for data fetching
- TanStack Virtual for virtualized scrolling
- Tailwind CSS for styling
- Zustand for state management
Quick Start
Prerequisites
- Docker and Docker Compose
Setup (one variable)
- Clone the repo:
git clone <repository-url>
cd muleimage
-
Set one environment variable in
.env— the host directory that contains your photo library. Whatever you point at will become your library inside Mulita.# macOS / Linux PHOTO_DIRS=/Users/you/Pictures # or any folder PHOTO_DIRS=/mnt/nas/photos # Windows (WSL) PHOTO_DIRS=/mnt/c/Users/you/Pictures -
Start the stack:
docker compose up -d
- Open
http://localhost:3000. On first boot Mulita will:- Mount your
PHOTO_DIRSat/photosinside the container - Auto-create a source root called Library pointing at
/photos - Queue an initial scan, generate thumbnails, and start serving them
- Mount your
You don't need to touch mulita.yml or the API to get started.
How libraries are managed
Mulita is config-driven: the host directory you mount via
PHOTO_DIRS becomes your library, and the backend automatically
registers it as a source root on startup. There is no UI for adding
or removing source roots — to change what Mulita scans, edit .env
(or docker-compose.yml for multi-mount setups) and restart the
stack.
This keeps the model simple: the docker mount IS the library. No two layers, no confusion about which view to use.
Changing or adding libraries
To point at a different library:
- Edit
PHOTO_DIRSin.env docker compose down- (Optional, for a clean slate)
docker volume rm muleimage_db_data muleimage_thumbs_data muleimage_proxies_data docker compose up -d
The new library shows up automatically. Without step 3 the old library's metadata stays in the DB and you'll see a warning at startup that the old source root's path is missing on disk — that's a hint to clean up.
For multiple libraries, edit docker-compose.yml and add additional
mount lines:
volumes:
- ${PHOTO_DIRS}:/photos:rw
- /Volumes/Archive:/archive:rw # additional library
Each mounted directory will need a corresponding source root row in
the DB; today that means POST /api/v1/folders via curl, or wait
for the multi-mount auto-registration that's on the roadmap.
Read-only libraries
The default mount is :rw because file operations (rename, move,
empty discard pile) need to mutate the filesystem. If you want a
strict read-only library — pointing at a network share, an
authoritative archive, etc. — flip :rw to :ro in
docker-compose.yml. Mulita will keep working for browsing, rating,
color labels, picks, heaps, and the (soft) discard flag, but the
following will return an OS error:
PATCH /photos/{id}with a newfilename(rename)POST /photos/move(bulk move)DELETE /discard/empty(file unlinks)
Heads up: with :rw, Mulita has full write access to whatever
host directory you mount. Treat the same way you would Lightroom's
catalog folder.
Architecture
The application consists of 5 Docker services:
- frontend: React SPA served by Nginx
- backend: FastAPI REST API
- worker: Celery workers for background tasks
- redis: Message broker for Celery
- db: SQLite database (file-based)
Keyboard Shortcuts
| Key | Action |
|---|---|
← → ↑ ↓ |
Navigate photos |
Space |
Quick preview |
Enter |
Open loupe view |
P |
Pick photo |
X |
Reject photo |
1-5 |
Set star rating |
Tab |
Toggle left sidebar |
I |
Toggle metadata panel |
G |
Grid view |
E |
Loupe view |
Delete |
Move to trash |
Development
Backend Development
cd backend
pip install -r requirements.txt
uvicorn app.main:app --reload
Frontend Development
cd frontend
npm install
npm run dev
Configuration
Source roots are managed by the UI / API (the database owns them). Edit
mulita.yml to configure operational settings only:
- Thumbnail sizes, quality, and format
- Scanner behaviour (watch, batch size, initial scan)
- Performance tuning (concurrency, cache TTLs, DB pool)
Performance
- Handles 100,000+ photos efficiently
- Virtual scrolling for smooth timeline navigation
- Thumbnail generation at 10+ photos/second
- SQLite FTS5 for fast full-text search
Future Features (Phase 2)
- AI-powered scene classification
- Face detection and clustering
- Smart albums
- Duplicate detection
- Export presets
- Multi-user support
License
MIT