Drag, drop, or paste into session
Bring images in however they already exist: watched screenshots, dragged files, or ⌘V straight into the preview panel.
SnapMerge
macOS screenshot merge utility
Built for docs, bug reports, support replies, walkthroughs
Collect, clean up, and annotate screenshots before they leave your Mac.
SnapMerge watches screenshots, accepts dragged or pasted images, lets you reorder and annotate the merged preview, then exports one clean image with better sizing and spacing controls.
macOS 13+ · Local-only processing
New in 1.1
Paste images, annotate the merged preview, fine-tune spacing, and open the result faster after export.
Input
Watch, drag, or paste
Annotate
Highlight, outline, plus more in Pro
Layout
Match Sizes, Upscale, spacing tools
Finish
Open, Show in Finder, Done
Pro unlock
More images, custom folders, advanced spacing, and stronger annotation tools.
Feature highlights
What you can do now without bouncing between apps.
Tune spacing in preview
ProEdit gap, outer padding, color tint, and intensity inside the live preview instead of exporting, checking, and retrying.
Annotate before export
Partial ProUse highlight and outline for free, with pixelate, pencil, and text available as advanced Pro tools.
Smarter sizing defaults
Match Sizes is now the default, and Match Sizes & Upscale gives you a cleaner strip when source images differ more than they should.
Custom save location
ProChoose where merged images are saved instead of always using the default export location.
Optional AirDrop workflow
You can keep an AirDrop folder in the workflow too, so incoming images can join the same session during active capture.
SnapMerge Pro unlocks unlimited images, custom save location, advanced spacing controls, and advanced annotation tools.
Free vs Pro
Start free. Unlock Pro when your screenshot workflow gets bigger.
Feature
Free
Pro
Core screenshot merge workflow
✓
✓
Drag & drop and paste into session
✓
✓
Match Sizes and Match Sizes & Upscale
✓
✓
Basic annotation tools: Highlight and Outline
✓
✓
Unlimited images
—
✓
Custom destination folders
—
✓
Advanced spacing: gap, padding, color, intensity
—
✓
Advanced annotation: Pixelate, Pencil, Text
—
✓
See it working
Three things people usually want to check before installing.
Can I fix order? Can I preview the result? Can I switch layout when the screenshots are tall? And now, can I clean it up before export? SnapMerge is much better at all four.
Reorder without friction
Useful when macOS caught the shots in the wrong order or your explanation needs a different flow before merge.
Preview and refine
Quickly check spacing, continuity, order, and now the final cleanup pass before export.
Switch sizing and layout
Better for long chats, step-by-step tutorials, mixed image sizes, and narrow content streams.
Small app energy
No account. No subscription. No need to open a bigger app just to merge, annotate, and send a few screenshots.
Ready when you are
Start with the free app, then unlock Pro if you need more room and control.
Local image processing
$9 one-time Pro unlock
Unlimited images in Pro
Advanced annotation tools