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pngquantPngyu
Free

Free and open source; the CLI is under GPL-3.0-or-later with some parts under HPND and…

 Free

Free and distributed under the BSD license.

Windows, macOS, Linux, Command line Windows, macOS
  • Large file size reductions with preserved transparency
  • Adaptive dithering with less noise
  • Gives pngquant a graphical interface
  • Pre-built binaries for Windows and macOS
  • Command line only; graphical use needs a separate front end
  • Lossy, so not suited to images that must stay pixel-exact
  • Handles PNG files only
  • No pre-built Linux binary
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-or-later License: BSD-3-Clause
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked October 2, 2026

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