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NConvert vs Retrobatch: catalog facts
NConvert	Retrobatch
Freemium Freeware for private use; commercial use requires a business licence from 100 euros plus…	Paid Paid app with a 7 day free trial.
Windows, macOS, Linux, Command line	macOS
Reads more than 500 image formats and writes about 70 More than 80 commands for transforms, adjustments, filters and metadata	Visual node-based workflows with multiple inputs and outputs Metadata editing and stripping without recompressing images
Commercial use requires a paid licence No graphical interface; XnConvert is the GUI equivalent	macOS only Paid after the 7 day trial
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	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.