Board Thread:General Discussion/@comment-28453528-20160514015018/@comment-5558012-20160514135251

It's standard practice to include the license of an image on the image page, but many wikis neglect to do so (out of ignorance of image licensing or plain laziness).


 * If the image was created entirely by the uploader and they don't release it under CC BY-SA (or other free/attribution licensing), you should assume it's copyrighted and must get permission from the owner.
 * If the image is taken from a copyrighted work (series, film, etc), most of the time (if not stated otherwise) the image is used under the assumption of fair use (even if not specifically stated). If it's from a copyrighted work, the uploader doesn't own the image. While not required in this case, it's still best practice to acknowledge the source(s) (the uploader and the copyrighted work).