License FAQs

Commonly asked questions about Bootstrap's open source license.

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Bootstrap is released under the MIT license and is copyright 2017 Twitter. Boiled down to smaller chunks, it can be described with the following conditions.

It requires you to:

  • Keep the license and copyright notice included in Bootstrap’s CSS and JavaScript files when you use them in your works

It permits you to:

  • Freely download and use Bootstrap, in whole or in part, for personal, private, company internal, or commercial purposes
  • Use Bootstrap in packages or distributions that you create
  • Modify the source code
  • Grant a sublicense to modify and distribute Bootstrap to third parties not included in the license

It forbids you to:

  • Hold the authors and license owners liable for damages as Bootstrap is provided without warranty
  • Hold the creators or copyright holders of Bootstrap liable
  • Redistribute any piece of Bootstrap without proper attribution
  • Use any marks owned by Twitter in any way that might state or imply that Twitter endorses your distribution
  • Use any marks owned by Twitter in any way that might state or imply that you created the Twitter software in question

It does not require you to:

  • Include the source of Bootstrap itself, or of any modifications you may have made to it, in any redistribution you may assemble that includes it
  • Submit changes that you make to Bootstrap back to the Bootstrap project (though such feedback is encouraged)

The full Bootstrap license is located in the project repository for more information.