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CSS Minifier

Online CSS Minifier/Compressor. Free! Provides an API. Simple Quick and Fast.

Programs

Lots of people are making little programs to use CSS Minifier - see the programs page.

GGG-KILLER

GGG-KILLER made a C# program to use both CSS Minifier and JavaScript Minifier : https://github.com/GGG-KILLER/CSS-And-Js-Minifier.

Kotlin Minifier

CraicOverflow89 made a Kotlin minifier: https://github.com/CraicOverflow89/JavaScript-Minifier