Image Compare
by gimletlove
Image comparison and visual diff tool
About
Image Compare is a desktop image comparison and visual diff tool for Linux and Windows. Compare two or more images side by side, in a stacked view, or in a grid layout, and generate luminance SSIM heatmaps to highlight structural differences between two images.
Use it to compare different versions of the same image, choose the best-quality copy from multiple sources, check compression artifacts, inspect scans or image exports, compare edited or upscaled versions, and catch subtle changes in color, sharpness, cropping, scaling, or encoding.
- Open images using drag-and-drop, the file picker, command-line arguments, or a file manager's Open With action
- Compare two or more images side by side, in a stacked view, or in a grid layout
- Synchronize zoom and pan across all images
- Keep the same proportional region visible across different resolutions
- Lock individual images to zoom and pan them independently
- Flip between images in the same position using stacked view
- Generate and export luminance SSIM heatmaps to highlight structural differences between two images
- Switch between color-managed rendering using embedded profiles and raw rendering
- Copy image paths, open containing folders, and close files from image context menus
Permissions
Everything this app can reach outside its sandbox. Nothing here weakens it.
- inter-process communication (needed for X11)
--share=ipc - X11 display, only when Wayland is unavailable
--socket=fallback-x11 - Wayland display
--socket=wayland - GPU acceleration
--device=dri - access to xdg-config/kdeglobals
--filesystem=xdg-config/kdeglobals:ro - talks to com.canonical.AppMenu.Registrar
--talk-name=com.canonical.AppMenu.Registrar - talks to org.kde.kconfig.notify
--talk-name=org.kde.kconfig.notify - talks to org.kde.KGlobalSettings
--talk-name=org.kde.KGlobalSettings
Who publishes this
The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.
- verified on Flathub: the developer proved they control this app id
publisher:flathub
Maintenance
Recent activity on the upstream repository, or built and reviewed by Flathub.
No staleness signals: recent activity, or built and reviewed by Flathub.