MediaWiki:Licenses

• 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
    • 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