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pqiv vs nsxiv: catalog facts
pqiv	nsxiv
Free Free and open source under the GPL-3.0-or-later license.	Free Free open-source software.
Linux	Linux
Supports multiple image formats, PDFs, PostScript, videos, and archives Includes animations, slideshows, and image preloading	Very small and fast Keyboard-driven with a thumbnail browsing mode
GTK 3 based and listed for Linux	X11 only Configured by editing source and recompiling
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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