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cssmin

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library0.2.0pypypi✓ verified 35d ago

A Python port of the YUI CSS compression algorithm, providing minification for CSS files. The library is currently at version 0.2.0 and has seen minimal updates recently, suggesting a stable but slow release cadence. It aims to replicate the functionality of the original YUI Compressor for CSS.

serialization
github ↗package ↗
Install & Compatibility
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No compatibility data collected yet for this library.

Code
Verified usage

Verified import paths — ran on the pinned version, not inferred.

The primary minification function is accessed via `cssmin.cssmin()` after importing the module.

import cssmin

This quickstart demonstrates how to import the `cssmin` library and use its `cssmin()` function to minify a string of CSS content. The output will show the minified CSS and its reduced size.

import cssmin css_content = """ body { font-family: Arial, sans-serif; color: #333; } h1 { margin-bottom: 10px; /* This is a comment */ padding: 5px; } """ minified_css = cssmin.cssmin(css_content) print("Original CSS size:", len(css_content), "bytes") print("Minified CSS size:", len(minified_css), "bytes") print("Minified CSS:\n", minified_css)
cssmin --version
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Known footguns
gotchaThe `cssmin` library is based on the YUI CSS compression algorithm, which was last updated in 2011. This means it may not fully support modern CSS features (e.g., custom properties/variables, `calc()`, newer pseudo-classes, grid/flexbox syntax) introduced after this period. Using it with complex, modern CSS might lead to incorrect minification, malformed output, or outright errors.
gotchaThe `cssmin` library has not been actively maintained since 2021. While it remains stable for its intended purpose, this lack of active development means bug fixes for new edge cases, performance improvements, or support for future Python or CSS standard changes are unlikely.
gotchaThe `cssmin.cssmin()` function expects a string containing the CSS content to be minified, not a file path. Passing a `Path` object or a string representing a file path directly will result in a `TypeError`.
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Version history

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Audit
Security & dependencies

CVE tracking and dependency tree are planned for a later release.

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Resources
githubhttp://github.com/zacharyvoase/cssmin ↗
packagehttps://pypi.org/project/cssmin/ ↗