Creative Commons licences

Creative Commons is a licencing system that allows you to share, remix and reuse material legally.

Creative Commons is an international non-profit organisation that seeks to expand the commons of shared knowledge and culture. It has a mission of empowering people by equipping them with “technical, legal, and policy solutions to enable sharing of knowledge and culture in the public interest”.

Creative Commons provides a set of copyright licences and tools that give all users a free, simple, and standardised way to:

  • grant copyright permissions for creative and academic works
  • ensure proper attribution
  • enable others to copy, distribute, and make use of those works.

Creative Commons licences

Creative Commons licences give all users a standardised way to grant permission to others to use their work under copyright law.

There are six different licence types, listed from most permissive to least permissive below.

Attribution CC BY

  • lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation
  • most accommodating of licences offered
  • recommended for maximum dissemination and use of licensed materials.

Attribution-ShareAlike CC BY-SA

  • lets others remix, tweak, and build upon your work even for commercial purposes, as long as they credit you and license their new creations under the identical terms
  • licence is often compared to “copyleft” free and open source software licences. All new works based on yours will carry the same licence, so any derivatives will also allow commercial use
  • the licence used by Wikipedia, and is recommended for materials that would benefit from incorporating content from Wikipedia and similarly licenced projects.

Attribution-NoDerivs CC BY-ND

  • licence allows for redistribution, commercial and non-commercial, as long as it is passed along unchanged and in whole, with credit to the author/creator.

Attribution-NonCommercial CC BY-NC

  • lets others remix, tweak, and build upon your work non-commercially, and although new works must also acknowledge you and be non-commercial, they don’t have to license their derivative works on the same terms.

Attribution-NonCommercial-ShareAlike CC BY-NC-SA

  • lets others remix, tweak, and build upon your work non-commercially, as long as they credit you and license their new creations under identical terms.

Attribution-NonCommercial-NoDerivs CC BY-NC-ND

  • This is the most restrictive of the Creative Commons six main licences, and only allows others to download your works and share them with others as long as they credit you, but they can’t change them in any way or use them commercially.