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gThumb vs Gwenview: catalog facts
gThumb	Gwenview
Free Free and open source under the GPL version 2 or later.	Free Free and open source, part of the KDE applications.
Linux	Linux
Native GNOME desktop application Works on local folders without a server	Quick browsing through folders of images Basic edits such as crop, resize and red-eye reduction
Linux only No cloud sync or phone backup	Editing is limited to simple adjustments Best integrated with the KDE Plasma desktop
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	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 23, 2026

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