From Consumer_Action_Taskforce
- Unknown_copyright|I don't know exactly
- Your own work (best practices):
- Own work, copyleft, attribution required (Multi-license GFDL, CC BY-SA all versions)
- Own work, copyleft, attribution required (CC BY-SA all versions)
- CC0 1.0 Universal Public Domain Dedication, all rights waived (Public domain)
- Own work, copyleft, attribution required (GFDL, CC BY-SA 4.0)
- Own work, attribution required (GFDL, CC BY 4.0)
- Own work, copyleft, attribution required (CC BY-SA 4.0)
- Not self-made, but has been released under:
- Creative Commons licenses
- Attribution ShareAlike 4.0
- Attribution ShareAlike 3.0
- Attribution 4.0
- Attribution 3.0
- CC0 1.0 Universal Public Domain Dedication
- Free Art License
- Public domain:
- Author died more than 100 years ago
- Author died more than 100 years ago AND the work was published before 1930
- Author died more than 70 years ago AND the work was published before 1930
- Author died more than 70 years ago BUT the work was published after 1930
- Reproduction of a painting or other 2D work that is in the public domain because of its age – needs specification after uploading
- First published in the United States before 1930
- First published in the United States between 1930 and 1977 without a copyright notice
- Original work of the US Federal Government
- Original work of NASA
- Original work of the US Military Navy
- Too simple to be copyrighted
- Logo with only simple text (wordmark)
- Other alternatives:
- I found the image on Google or a random website
- Fair use image
- Copyrighted, but may be used for any purpose, including commercially
- May be used for any purpose, including commercially, if the copyright holder is properly attributed
