Extension:Less

The Less extension provides the lessphp LESS compiler to other extensions.

Using git
The Less extension contains the lessphp compiler in a subdirectory. The easiest way to download everything at once is to use  with the   parameter.
 * In your extensions/ folder run the following command
 * Add the following code to your LocalSettings.php (at the bottom)
 * ✅ – Navigate to "Special:Version" on your wiki to verify that the extension is successfully installed.

Using downloads
If the above is not an option for you follow this procedure: