Compare software

OptiImageOptiPNG
Free

Free and open source under the LGPL-2.1-only licence.

 Free

Free and open source under the zlib licence.

Linux Windows, Command line
  • Lossless and lossy compression modes
  • Option to keep or remove metadata
  • Lossless recompression of PNG files
  • Converts BMP, GIF, PNM and TIFF to optimized PNG
  • Linux only
  • Young project, first released in late 2024
  • Command line only, no graphical interface
  • Lossless only, so savings are smaller than lossy tools
Downloadable app Downloadable app
Open source Open source
License: LGPL-2.1-only License: Zlib
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked October 2, 2026

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