Improve ImgSLI
by Loganavter
Image comparison with advanced magnifiers
About
Improve ImgSLI is an open-source image comparison tool focused on precise visual inspection, responsive interaction, and advanced canvas rendering workflows. It is designed for artists, photographers, retouchers, AI upscaling workflows, quality control, and anyone who needs to compare images at pixel level without losing context.
Key features include:
- Compare images with a movable horizontal or vertical split line, including zooming and panning in the main canvas.
- Use one or more synchronized magnifiers with adjustable capture areas, display sizes, freeze mode, combined layouts, internal split, per-instance colors, and keyboard-assisted positioning.
- Load and manage multiple images per side with drag-and-drop, list switching, swapping, and direct filename editing.
- Inspect visual differences with rendering-aware preview controls and selectable interpolation modes.
- Export full-resolution comparison images with overlays, labels, and comparison state preserved.
- Edit recorded comparison sessions in the built-in video editor with timeline selection, trimming, preview playback, and export.
- Use a feature-contract based canvas architecture that keeps overlays, magnifiers, guide lines, settings, and export behavior synchronized.
- Use persistent settings, multilingual interface support, and structured diagnostics for advanced troubleshooting.
The application is distributed under the MIT License.
Permissions
1 permission weaken the sandbox. Flatsonar asks before installing.
- X11 display: X11 lets apps read input and windows of other apps
--socket=x11 - inter-process communication (needed for X11)
--share=ipc - Wayland display
--socket=wayland - X11 display, only when Wayland is unavailable
--socket=fallback-x11 - GPU acceleration
--device=dri - access to your documents folder
--filesystem=xdg-documents - access to your download folder
--filesystem=xdg-download - access to your pictures folder
--filesystem=xdg-pictures - 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.