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Converseen vs XL Converter: catalog facts
Converseen	XL Converter
Free Free and open source; donations accepted.	Free Free and open source under the GPLv3.
Windows, macOS, Linux	Windows, Linux
Converts and resizes whole batches of images at once Supports over 100 image formats	Supports JPEG XL, AVIF and JPEGLI encoding Lossless, reversible JPEG to JPEG XL transcoding
Not a full image editor, only batch operations PDF conversion needs extra setup according to the help pages	macOS build is a deprecated beta Focused on conversion rather than editing
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
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 October 1, 2026

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