Minifies CSS requirements using Minify (
Latest commit 7d9aca4 Dec 22, 2015 @nathancox Merge pull request #6 from helpfulrobot/add-standard-editorconfig-file
Added standard .editorconfig file

SilverStripe Minify CSS Module

This module replaces part of the Requirements system to compress CSS files using The idea and implementation are basically stolen from Tonyair (


Nathan Cox (


SilverStripe 3.1+ Check out the SS-3.0 branch for a version compatible with SS 3.0

Installation Instructions

  1. Place the files in a directory called "minify" in the root of your SilverStripe installation
  2. Visit


The module will automatically replace the Requirements backend with a custom subclass, so you don't need to do anything differently.

Just use combine_files to include your CSS as normal:


$themeFolder = $this->ThemeDir();
$files = array(
	$themeFolder . '/css/layout.css',
	$themeFolder . '/css/typography.css',
	$themeFolder . '/css/form.css'

Requirements::combine_files("common.min.css", $files);

Your CSS files will automatically be minified when combining (like JavaScript is).

By default relative urls in the CSS files (eg background-image:url('../images/background.png');) will be rewritten so the combined CSS file can be kept in assets (eg to background-image:url('/themes/mytheme/images/background.png');) but you can turn this behaviour off by putting the following line in your _config.php:


Minify_Requirements_Backend::$rewrite_uris = false;

Known Issues

Issue Tracker