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YOGA Image Optimizer vs pngquant: catalog facts
YOGA Image Optimizer	pngquant
Free Free and open source under the GPL-3.0 licence.	Free Free and open source; the CLI is under GPL-3.0-or-later with some parts under HPND and…
Windows, Linux	Windows, macOS, Linux, Command line
Simple drag and drop workflow Converts between JPEG, PNG and WebP	Large file size reductions with preserved transparency Adaptive dithering with less noise
JPEG optimization is slow and memory hungry Small gains when optimizing WebP files	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: GPL-3.0-or-later	License: GPL-3.0-or-later
No account 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

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