Less. The dynamic stylesheet language.
JavaScript CSS HTML
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.github Update stale.yml Nov 14, 2017
benchmark Added more accurate & detailed benchmark Jul 14, 2016
bin Fixes #3116 - lessc not loading plugins in 3.0 Feb 15, 2018
build More style cop.. Jan 30, 2015
dist Release v3.0.4 May 7, 2018
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test Merge pull request #3172 from jacobwarduk/type-checking-length-units Apr 30, 2018
.eslintrc.json eslint spaced-comment and corresponding changes May 31, 2017
.gitattributes Support include-path inside data-uri. Related to #1634 and #2275 Jan 13, 2015
.gitignore Reference inline comments. Aug 31, 2015
.npmignore ignore .grunt folder for npm Oct 19, 2014
.travis.yml upgrade source-map to 0.6.x to support node 6+ Feb 25, 2018
CHANGELOG.md NEVER put white space after (. May 9, 2018
CONTRIBUTING.md merge in latest 1.7.1 release Jun 10, 2014
Gruntfile.js Fixes #3181 Apr 18, 2018
LICENSE Remove copyright from licence so we only have one Jun 6, 2014
README.md Point badges at master branch Feb 11, 2018
appveyor.yml Removed install npm 2 version for appveyor. It was hotfix for old nod… Jan 5, 2018
bower.json Remove bower version as per #2607 Sep 25, 2015
browser.js remove un-necessary index Nov 9, 2014
build.gradle Trim trailing whitespace. Mar 2, 2014
gradlew added gradle wrapper scripts Oct 27, 2013
gradlew.bat added gradle wrapper scripts Oct 27, 2013
index.js remove un-necessary index Nov 9, 2014
package-lock.json upgrade source-map to 0.6.x to support node 6+ Feb 25, 2018
package.json Release v3.0.4 May 7, 2018


npm version Build Status Build status Dependencies devDependency Status optionalDependency Status Twitter Follow Join the chat at https://gitter.im/less/less.js Chat with Less.js users

Sauce Test Status


The dynamic stylesheet language. http://lesscss.org.

This is the JavaScript, official, stable version of Less.

Getting Started

Options for adding Less.js to your project:

More information

For general information on the language, configuration options or usage visit lesscss.org.

Here are other resources for using Less.js:


Please read CONTRIBUTING.md. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.

Reporting Issues

Before opening any issue, please search for existing issues and read the Issue Guidelines, written by Nicolas Gallagher. After that if you find a bug or would like to make feature request, please open a new issue.

Please report documentation issues in the documentation project.


Read Developing Less.

Release History

See the changelog


Copyright (c) 2009-2017 Alexis Sellier & The Core Less Team Licensed under the Apache License.