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Loupe vs Ristretto: catalog facts
Loupe	Ristretto
Free Free, developed as part of the GNOME project and supported by donations.	Free Free and open source under the GPL v2.0 or later.
Linux	Linux
Fits naturally into the GNOME desktop Shows image metadata alongside the picture	Lightweight and quick to open images Integrates with the Xfce desktop
Linux only Editing is limited to basic transforms	Linux only Viewing only, with no editing or library features
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0-or-later
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.