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NConvert vs G'MIC: catalog facts
NConvert	G'MIC
Freemium Freeware for private use; commercial use requires a business licence from 100 euros plus…	Free Free and open source under the CeCILL licenses.
Windows, macOS, Linux, Command line	Windows, Web, Command line
Reads more than 500 image formats and writes about 70 More than 80 commands for transforms, adjustments, filters and metadata	Several interfaces: command line, GIMP and Qt plug-ins, web service and C++ library Large set of image filters that can be scripted
Commercial use requires a paid licence No graphical interface; XnConvert is the GUI equivalent	Command-line syntax takes time to learn Not a standalone painting or layer-based editor
Downloadable app	Downloadable app, Web application
Closed source	Open source
License: Freeware	License: CECILL-2.1
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.