A PostCSS plugin to replace class names based on a customizable renaming scheme.

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A PostCSS plugin to replace class names based on a customizable renaming scheme.
strategy by prefix except ids outputMapCallback


postcss-rename makes it possible to rename CSS class names in the generated stylesheet, which helps reduce the size of the CSS that is sent down to your users. It's designed to be used along with a plugin for a build system like Webpack that can rewrite HTML templates and/or references in JS. If you write such a plugin, let us know and we'll link it here!



The renaming strategy to use:
  • "none": Don't change names at all. This is the default strategy.

  • "debug": Add an underscore at the end of each name. This is useful for
keeping classes readable during debugging while still verifying that your templates and JavaScript aren't accidentally using non-renamed classes.
  • "minimal": Use the shortest possible names, in order of appearance: the
first class is renamed to .a, the second to .b, and so on.
This can also be a function that takes a CSS name (the full name in by-whole mode and the part in by-part mode) and returns its renamed value.


Whether to rename in "by-whole mode" or "by-part mode".
  • "whole": Rename the entire name at once, so for example .tall-image might
become .a. This is the default mode.
  • "part": Rename each hyphenated section of a name separately, so for example
.tall-image might become .a-b.


A string prefix to add before every renamed class. This applies even if strategy is set to none.
In by-part mode, the prefix is applied to the entire class, but it isn't included in the output map.


An array (or other Iterable) of names that shouldn't be renamed.


Whether to rename ID selectors as well as class selectors. Defaults to false.


A callback that's passed a map from original class names to their renamed equivalents, so that an HTML template or JS class references can also be renamed.
In by-part mode, this contains separate entries for each part of a class name. It doesn't contain any names that weren't renamed because of except.
Disclaimer: This is not an officially supported Google product.