Compare software

Zipic vs pngquant: catalog facts
Zipic	pngquant
Freemium 25 free images per day with basic features; Pro is a one-time purchase.	Free Free and open source; the CLI is under GPL-3.0-or-later with some parts under HPND and…
Windows, macOS, Command line	Windows, macOS, Linux, Command line
Processes images locally Wide format support including AVIF and JPEG XL	Large file size reductions with preserved transparency Adaptive dithering with less noise
Free tier limited to 25 images per day Windows version still in beta	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
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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