A lightweight macOS utility that stitches multiple images vertically into one long image.
English · 中文
| Finder | Photos |
 |
 |
- Smart output routing — images from Photos are imported back to Photos; images from Finder / CLI are saved next to the source files and revealed in Finder
- Photos "Edit With" — appears in the Photos right-click "Edit With" menu — select and stitch
- Finder multi-entry — select images in Finder, then use "Open With → Stitch Images" or right-click "Services → Stitch Images"
- Timestamp inheritance — the stitched image inherits the capture date of the first input (EXIF / TIFF / PNG / file attributes), so it won't jump to the latest in Photos
- Auto-merge batches — when Photos splits a multi-select into several
openevents, the app auto-merges them within a short window - HEIC-first output — prefers HEIC (smaller size); falls back to JPEG when the system doesn't support it
- macOS 13.0 (Ventura) or later
| Path | Description |
|---|---|
Sources/ |
AppKit app source code |
Resources/Info.plist |
Bundle, document types and Finder Service declarations |
Resources/*.lproj/ |
Localized strings (English & Simplified Chinese) |
scripts/build.sh |
Compile, package, install to ~/Applications/ |
scripts/smoke_test.sh |
Generate sample images and run a smoke test (no Photos import) |
./scripts/build.shThe app will be installed to ~/Applications/.
- In Photos, select multiple images, right-click → "Edit With" → "Stitch Images"
- If Photos only passes 1 image, use Finder: select images → right-click → "Services → Stitch Images"
- On first import back to Photos, the system will prompt for photo access — grant it
You can also use the command line:
open -a ~/Applications/Stitch\ Images.app photo1.jpg photo2.png photo3.heic./scripts/smoke_test.shThis test does not import into Photos. It saves output to a temp directory and prints the file path and pixel dimensions.