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JarkViewer vs Imagine: catalog facts
JarkViewer	Imagine
Free Free and open source.	Free Freeware.
Windows	Windows
Opens AVIF, HEIC and JPEG XL without extra codecs Handles animated images, RAW files and Live Photos	Very small download with fast loading Broad format support including camera RAW and modern formats like JXL and AVIF
Windows only Viewer only, with no editing or library features	Windows only Closed source freeware
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License: Freeware
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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