Compare software

pngcrushpngquant
Free

Free to use, modify, and redistribute under the license described with its source.

 Free

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

Windows, Linux, Command line Windows, macOS, Linux, Command line
  • Tries compression levels and PNG filters to reduce file size
  • Can remove or add ancillary PNG chunks
  • Large file size reductions with preserved transparency
  • Adaptive dithering with less noise
  • It is a command-line application.
  • Command line only; graphical use needs a separate front end
  • Lossy, so not suited to images that must stay pixel-exact
Downloadable app Downloadable app
Open source Open source
License: libpng license equivalent License: GPL-3.0-or-later
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 8, 2026

Checked October 1, 2026

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