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Resizer vs Retrobatch: catalog facts
Resizer	Retrobatch
Freemium Lite edition is free; a Pro licence is sold on the den4b site.	Paid Paid app with a 7 day free trial.
Windows	macOS
Simple drag-and-drop batch workflow Fit, fill and crop, or stretch resize modes	Visual node-based workflows with multiple inputs and outputs Metadata editing and stripping without recompressing images
Windows only Limited to BMP, GIF, PNG, JPEG and TIFF	macOS only Paid after the 7 day trial
Downloadable app	Downloadable app
Closed source	Closed source
License: CC-BY-NC-ND-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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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