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Twitter Bootstrap Build Status

Bootstrap is a sleek, intuitive, and powerful front-end framework for faster and easier web development, created and maintained by Mark Otto and Jacob Thornton at Twitter.

To get started, checkout!

Quick start

Clone the repo, git clone git://, or download the latest release.


For transparency and insight into our release cycle, and for striving to maintain backward compatibility, Bootstrap will be maintained under the Semantic Versioning guidelines as much as possible.

Releases will be numbered with the following format:


And constructed with the following guidelines:

  • Breaking backward compatibility bumps the major (and resets the minor and patch)
  • New additions without breaking backward compatibility bumps the minor (and resets the patch)
  • Bug fixes and misc changes bumps the patch

For more information on SemVer, please visit

Bug tracker

Have a bug? Please create an issue here on GitHub that conforms with necolas's guidelines.

Twitter account

Keep up to date on announcements and more by following Bootstrap on Twitter, @TwBootstrap.


Read more detailed announcements, discussions, and more on The Official Twitter Bootstrap Blog.

Mailing list

Have a question? Ask on our mailing list!



Channel: ##twitter-bootstrap (the double ## is not a typo)


We have included a makefile with convenience methods for working with the Bootstrap library.

  • dependencies Our makefile depends on you having recess, connect, uglify.js, and jshint installed. To install, just run the following command in npm:
$ npm install recess connect uglify-js jshint -g
  • build - make Runs the recess compiler to rebuild the /less files and compiles the docs pages. Requires recess and uglify-js. Read more in our docs »

  • test - make test Runs jshint and qunit tests headlessly in phatomjs (used for ci). Depends on having phantomjs installed.

  • watch - make watch This is a convenience method for watching just Less files and automatically building them whenever you save. Requires the Watchr gem.


Please submit all pull requests against *-wip branches. If your unit test contains javascript patches or features, you must include relevant unit tests. Thanks!


Mark Otto

Jacob Thornton

Copyright and license

Copyright 2012 Twitter, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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