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cssFx inserts vendor prefixes for CSS3 properties.

branch: master


cssFx automatically adds vendor-specific prefixes to CSS properties that need them.


  • Include a script tag in your source:
<script src="cssfx.js"></script>

Browsers Supported

  • Firefox 3+
  • Chrome 1+
  • Internet Explorer 6+
  • Safari 3+
  • Opera 9+

Important Considerations

  • IE and other browsers remove either unknown properties or properties with unknown values. To guarantee that all properties are parsed, link your stylesheet externally.
  • To prevent FOUC (flash of unstyled content), place cssfx.js immediately under the stylesheet tags.
  • cssFx adds the prefixes necessary to enable CSS3 functionality in supporting browsers, it doesn't simulate it (e.g. border-radius in IE6).


Prefixer is provided under the MIT license.

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