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ImageGlass vs Gwenview: catalog facts
ImageGlass	Gwenview
Freemium A free edition plus a paid Pro edition, listed at $14.90 as a one-time purchase for one…	Free Free and open source, part of the KDE applications.
Windows, macOS, Linux	Linux
Over ninety formats natively, including WebP, JPEG XL, HEIC, AVIF, SVG, HDR and raw Fast navigation through large folders with predictive caching and hardware acceleration	Quick browsing through folders of images Basic edits such as crop, resize and red-eye reduction
Some features are reserved for the paid Pro edition The macOS and Linux builds are much newer than the Windows one	Editing is limited to simple adjustments Best integrated with the KDE Plasma desktop
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.