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G'MICGraphicsMagick
Free

Free and open source under the CeCILL licenses.

 Free

Free and open source.

Windows, Web, Command line Windows, macOS, Linux, Command line
  • Several interfaces: command line, GIMP and Qt plug-ins, web service and C++ library
  • Large set of image filters that can be scripted
  • Reads and writes over 92 image formats, including AVIF, HEIC and JXL
  • Multi-threaded processing with OpenMP
  • Command-line syntax takes time to learn
  • Not a standalone painting or layer-based editor
  • Command-line and library only, with no graphical editor
  • Takes some learning for complex operations
Downloadable app, Web application Downloadable app
Open source Open source
License: CECILL-2.1 License: MIT
Not stated if an account is needed No account needed
Works offline Works offline

Checked October 2, 2026

Checked October 1, 2026

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