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Oculante vs IrfanView: catalog facts
Oculante	IrfanView
Free Free open-source software.	Freemium Free for private, educational and charitable use. A paid licence is required for…
Windows, macOS, Linux	Windows
Fast viewer built in Rust Wide image format support	Opens instantly, even on old hardware Batch conversion and renaming across whole folders
Project is in maintenance mode Editing features are basic	Windows only and closed source Commercial use needs a paid licence
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 21, 2026

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