Wikipedia:File copyright tags
Wikipedia takes copyright law very seriously. File description pages are tagged with the license and the source of the file. This makes it as easy as possible for readers, Wikipedians, IP addresses and creators of derivative works to know what they can and can't do with the files in our encyclopedia.
Note: A file released under an unnamed license, or under a named license not included in the links above, may still be suitable for Wikipedia. Copyright tags indicating more general usage rights can be found in the copyright template category to which this page belongs.
If you are the creator of a file, you can choose any acceptable free license. You can multi-license your file under different licenses, if you prefer. The license must not prevent commercial reuse or derivative works.
If you are uploading many files with the same source and license, you can create a new copyright tag. Please propose the tag on Wikipedia talk:File copyright tags. If you are not familiar with how to create templates which add images to categories, please ask for assistance.
Each template should have a corresponding category that automatically contains all the files tagged with the template. On the description page for the category include the following:
where name-of-the-tag is replaced with the actual name of the tag. In addition, include the template in the category Wikipedia file copyright templates by adding the following: