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NetpbmG'MIC
Free

Free and freely redistributable.

 Free

Free and open source under the CeCILL licenses.

Windows, macOS, Linux, Command line Windows, Web, Command line
  • Over 350 separate tools
  • Converters for about 100 graphics formats
  • Several interfaces: command line, GIMP and Qt plug-ins, web service and C++ library
  • Large set of image filters that can be scripted
  • No interactive or graphical tools
  • Many small programs to learn instead of one command
  • Command-line syntax takes time to learn
  • Not a standalone painting or layer-based editor
Downloadable app Downloadable app, Web application
Open source Open source
License: GPL-3.0-or-later License: CECILL-2.1
No account needed Not stated if an account is needed
Works offline Works offline

Checked October 1, 2026

Checked October 2, 2026

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