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Converseen vs Retrobatch: catalog facts
Converseen	Retrobatch
Free Free and open source; donations accepted.	Paid Paid app with a 7 day free trial.
Windows, macOS, Linux	macOS
Converts and resizes whole batches of images at once Supports over 100 image formats	Visual node-based workflows with multiple inputs and outputs Metadata editing and stripping without recompressing images
Not a full image editor, only batch operations PDF conversion needs extra setup according to the help pages	macOS only Paid after the 7 day trial
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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