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Loupe vs Xviewer: catalog facts
Loupe	Xviewer
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	Handles large images with constant memory use Ships by default in Linux Mint
Linux only Editing is limited to basic transforms	Linux only Viewing only, no real editing features
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
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.