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Resizer vs Converseen: catalog facts
Resizer	Converseen
Freemium Lite edition is free; a Pro licence is sold on the den4b site.	Free Free and open source; donations accepted.
Windows	Windows, macOS, Linux
Simple drag-and-drop batch workflow Fit, fill and crop, or stretch resize modes	Converts and resizes whole batches of images at once Supports over 100 image formats
Windows only Limited to BMP, GIF, PNG, JPEG and TIFF	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: CC-BY-NC-ND-3.0	License: GPL-3.0
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 September 23, 2026

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