Most efficient PNG compressor.
Advanced quantization algorithm generates high-quality images that load up to 4 times faster.
You can make pngquant deeply integrated with your app, speeding up image transfers and reducing storage space.
It's available as a native library with no external dependencies. It has an API for C/ObjC/C++/C# and any language that can call native code. Comes with dedicated object-oriented libraries for Java and Rust. Works on iOS.
Images from pngquant are fully standards-compliant and work everywhere, so your users can save, edit and share images without installing any codecs.
The license includes technical support straight from the library's author.
Bonus! It includes license for the gif.ski encoder that creates highest-quality GIFs using pngquant.