Huge News!Announcing our $40M Series B led by Abstract Ventures.Learn More
Socket
Sign inDemoInstall
Socket

rcssmin

Package Overview
Dependencies
Maintainers
1
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

rcssmin

CSS Minifier

  • 1.2.0
  • PyPI
  • Socket score

Maintainers
1

============== CSS Minifier

RCSSmin is a CSS minifier.

The minifier is based on the semantics of the YUI compressor, which itself is based on the rule list by Isaac Schlueter.

This module is a re-implementation aiming for speed instead of maximum compression, so it can be used at runtime (rather than during a preprocessing step). RCSSmin does syntactical compression only (removing spaces, comments and possibly semicolons). It does not provide semantic compression (like removing empty blocks, collapsing redundant properties etc). It does, however, support various CSS hacks (by keeping them working as intended).

Here's a feature list:

  • Strings are kept, except that escaped newlines are stripped

  • Space/Comments before the very end or before various characters are stripped: :{});=>],! (The colon (:) is a special case, a single space is kept if it's outside a ruleset.)

  • Space/Comments at the very beginning or after various characters are stripped: {}(=:>[,!

  • Optional space after unicode escapes is kept, resp. replaced by a simple space

  • whitespaces inside url() definitions are stripped, except if it's a quoted non-base64 data url

  • The nesting selector (&) is recognized

  • Comments starting with an exclamation mark (!) can be kept optionally.

  • All other comments and/or whitespace characters are replaced by a single space.

  • Multiple consecutive semicolons are reduced to one

  • The last semicolon within a ruleset is stripped

  • CSS Hacks supported:

    • IE7 hack (>/**/)
    • Mac-IE5 hack (/*\*/.../**/)
    • The boxmodelhack is supported naturally because it relies on valid CSS2 strings
    • Between :first-line and the following comma or curly brace a space is inserted. (apparently it's needed for IE6)
    • Same for :first-letter

rcssmin.c is a reimplementation of rcssmin.py in C and improves runtime up to factor 100 or so (depending on the input). docs/BENCHMARKS in the source distribution contains the details.

Supported python versions are 2.7 and 3.6+.

.. _YUI compressor: https://github.com/yui/yuicompressor/

.. _the rule list by Isaac Schlueter: https://github.com/isaacs/cssmin/

Copyright and License


Copyright 2011 - 2024
André Malo or his licensors, as applicable.

The whole package (except for the files in the bench/ directory) is
distributed under the Apache License Version 2.0. You'll find a copy in the
root directory of the distribution or online at:
<http://www.apache.org/licenses/LICENSE-2.0>.


Bugs
~~~~

No bugs, of course. ;-)
But if you've found one or have an idea how to improve rcssmin, feel free
to send a pull request on `github <https://github.com/ndparker/rcssmin>`_
or send a mail to <rcssmin-bugs@perlig.de>.


Author Information
~~~~~~~~~~~~~~~~~~

André "nd" Malo <nd perlig.de>
GPG: 0x029C942244325167


    If God intended people to be naked, they would be born that way.
    -- Oscar Wilde

.. vim:tw=72 syntax=rest

FAQs


Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

Packages

npm

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc