Cascading Style Sheets, commonly known as CSS, is a language that focuses on the design and presentation aspects of documents created with markup languages like HTML or XML. This includes variants of XML such as SVG, MathML, or XHTML. CSS plays a vital role in the functioning of the World Wide Web, standing alongside HTML and JavaScript as one of the foundational technologies.
A CSS parser is a component of a web browser (or any CSS-processing tool) that reads CSS code and turns it into a structured format the computer can understand and use. This roundup focuses on CSS parsers for Linux.
Here’s our verdict captured in a legendary LinuxLinks-style ratings chart. Only free and open source software is eligible for inclusion here.

| CSS Parsers | |
|---|---|
| PostCSS | Transform styles with JavaScript plugins |
| Lightning CSS | Parser, transformer, bundler, and minifier |
| Rework | Plugin framework for CSS preprocessing |
| PHP CSS Parser | PHP library for reading CSS |
| Mensch | Non-validating CSS parser |
| CSSTree | Tool set for CSS |
| Stylis | Lightweight CSS preprocessor |
| tinycss2 | CSS parser and generator |
| Parse | Go library offering lexers, parsers, and parsing utilities |
| LibCSS | CSS parser and selection engine |
| Ruby CSS Parser | Load, parse and cascade CSS rule sets |
| ParserLib | CSS3 SAX-inspired parser |
| css-parser | Fork of the cssutils project |
| ph-css | Parse, represent, modify, and write CSS stylesheets |
| Stylecow | Modern CSS to all browsers |
| Gonzales PE | CSS parser which plays nicely with preprocessors |
| CSSOM | CSS parser written in pure JavaScript |
This article has been updated to reflect the changes outlined in our recent announcement.
Explore our carefully curated directory of recommended free and open source software, covering every major software category.The directory forms part of our extensive collection of articles for Linux enthusiasts. It includes hundreds of detailed reviews, together with free and open source alternatives to proprietary software from companies such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. LinuxLinks also covers interesting projects worth exploring, Linux-compatible hardware, free programming books and tutorials, and much more. Know a useful free and open source Linux application that we haven’t covered? Tell us about it using our submission form. |


Please read our Comment Policy before commenting.