About this website
An independent resource that explains PostCSS clearly and links only to official downloads.
What this site is
This website is an independent guide to PostCSS, the open-source tool for transforming CSS with JavaScript plugins. It is written and maintained by the PostCSS.net Editorial Team. We are not part of the PostCSS project, its maintainers or Evil Martians, and we do not speak for them.
Our goal is simple: give developers one clear page with verified release facts, an official download, practical setup steps and honest comparisons, plus in-depth guides for the questions people search most.
About PostCSS itself
PostCSS was created by Andrey Sitnik and first published to npm on November 4, 2013. It is released under the MIT license, built by Evil Martians and maintained on GitHub with many contributors. The official documentation lives at postcss.org and the source at github.com/postcss/postcss.
How we research and verify
- Primary sources first. Version numbers, release dates, licenses and requirements come from the npm registry, the package.json files and the official GitHub repository.
- Dated facts. We show when information was last checked (November 9, 2026) separately from the software's own release date.
- No invented data. We do not publish fake ratings, download counts, reviews or awards. Where something could not be confirmed, we say “unconfirmed”.
- Plain language. Examples are tested patterns from official READMEs, simplified where it helps understanding.
How downloads work here
We do not host, repackage or modify PostCSS. Download buttons point to the source archives that GitHub generates for the official release tag. For project use we recommend installing from npm.
Corrections
If you spot an outdated version number or an error, please tell us via the contact page. We review corrections and update the page date when we change facts.