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Loupe vs Swayimg: catalog facts
Loupe	Swayimg
Free Free, developed as part of the GNOME project and supported by donations.	Free Free and open source.
Linux	Linux
Fits naturally into the GNOME desktop Shows image metadata alongside the picture	Wide format support including JPEG XL, HEIC, AVIF and RAW Lua scripting for customization
Linux only Editing is limited to basic transforms	Linux only and aimed at Wayland Configuration takes more effort than a typical desktop viewer
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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