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PhotoResizerOK vs Converseen: catalog facts
PhotoResizerOK	Converseen
Free Freeware.	Free Free and open source; donations accepted.
Windows	Windows, macOS, Linux
Batch image resizing and format conversion Supports RAW images	Converts and resizes whole batches of images at once Supports over 100 image formats
Windows only	Not a full image editor, only batch operations PDF conversion needs extra setup according to the help pages
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
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.