Image comparison arrives — 2-way and 3-way
LibreMerge now compares images, porting WinMerge's own image-diff engine so the behavior matches what WinMerge users already know (requested in #2).
New
- Image comparison for pairs and triples (PNG, JPEG, GIF, TIFF, WebP, BMP, TGA, ICO and more): block-level pixel differences with the classic gold highlight, navigated like any other comparison
- The full WinMerge control set: block size and highlight alpha, color-distance threshold, insertion/deletion detection for shifted rows/columns, XOR / alpha-blend / animated overlays, blink mode, and zoom with cursor-anchored Ctrl+wheel — settings are sticky across comparisons, like WinMerge's
- Editing: copy differences between sides with undo/redo, rectangle select with cut/copy/paste (floating paste, committed with Enter), resizing from the edges, rotation and flips, saving with the usual
.bakbackup - Multi-page: animated GIFs and multi-page TIFFs compare page by page
- Difference minimap in the settings panel — click it to center every pane on that spot
- 3-way image comparison with side classification (left-only / right-only / conflict)
- Folder compare (optional, off by default): image pairs can compare by pixel content with the same color-distance threshold
- Fully translated to Brazilian Portuguese, matching WinMerge's terminology
Fixed
- 3-way copy commands are now pane-relative like WinMerge: Alt+Right on the middle pane pushes the change into the right pane (previously every merge targeted the middle)
- Pane headers/status no longer make the layout jitter when hovering a small window
- The overlay alpha value label follows its slider live
Downloads
- macOS: universal dmg (Intel + Apple Silicon, macOS 12+) — also
brew install --cask iagodpassos/tap/libremerge - Linux: AppImage for x86_64 and arm64 (any distro with glibc 2.36+, nothing to install)
- Debian 13 (amd64): a native
.debfor apt integration - Debian 12 users: use the AppImage (it is built on a Debian 12 base and runs there)