LightningCSS (FreeBSD x64 Native Build)

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library 1.32.0 ·javascript
verified May 27, 2026

LightningCSS is an exceptionally fast CSS parser, transformer, bundler, and minifier, leveraging the performance benefits of Rust. Currently stable at version 1.32.0, it maintains an active and frequent release cadence, often issuing minor or patch updates every few weeks. Key differentiators include its speed, boasting over 100x faster processing than JavaScript-based alternatives and capable of minifying millions of lines of code per second. It utilizes a browser-grade parser based on Mozilla's `cssparser` and processes typed property values, ensuring accuracy and consistency. The library offers extensive minification optimizations, including combining shorthands, merging adjacent rules, reducing `calc()` expressions, and converting colors to shorter formats. It also provides vendor prefixing, syntax lowering for older browsers, support for CSS Modules, and robust source map generation. Crucially, LightningCSS guarantees that its output CSS behaves identically to the input, avoiding unsafe optimizations that might alter styling for file size reductions.

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