-prefix-free is a client-side JavaScript utility that lets authors write unprefixed CSS while supporting browsers that historically required vendor prefixes. After inclusion, it examines linked stylesheets, style blocks, inline declarations, and dynamically added CSS. It detects the current browser’s prefix and modifies only properties, values, selectors, functions, keywords, and at-rules that need it. The bundled StyleFix framework also lets plugin authors register additional CSS transformation callbacks. Public APIs can process complete CSS strings or prefix individual selectors and properties. Because the conversion happens in the browser, the original styles remain clean and easier to maintain. The repository was archived in 2024 and is now mainly useful for legacy projects and browser-compatibility study.

Features

  • Automatic vendor prefix detection
  • Linked stylesheet processing
  • Inline CSS declaration correction
  • Dynamic stylesheet compatibility
  • Extensible StyleFix plugin framework
  • CSS string and selector APIs

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-prefix-free Screenshot 1

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License

MIT License

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Additional Project Details

Programming Language

JavaScript

Related Categories

JavaScript Libraries

Registered

2026-07-22
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