It is not a Wikipedia policy or guideline; rather, its purpose is to explain certain aspects of Wikipedia's norms, customs, technicalities, or practices. It may reflect varying levels of consensus.
Free content is free as in freedom. This page links to some of the most popular licenses for releasing such content. This page can be reached via http://enwp.org/WP:ICT/FL when forwarding the full URL is not convenient. If an image is available under one of these licenses, it is acceptable to be used in Wikipedia.
Generally, a work licensed under a CC tag with more requirements cannot be integrated into a work licensed under a more permissive CC license (such as integrating a CC BY-SA work into a CC BY work), unless the entire target work switches to the less permissive license.
Other Creative Commons licenses exist but are non-free for use in Wikipedia. See Non-free Creative Commons licenses for a full list and explanation.
Note: The licenses in this section require reprinting the entire license text with any reuse of the image. If you created the image yourself, please consider using a different license.
If one includes any of the content, the entire book/section goes under GFDL, unlike CC BY-SA.
{{GPL}} – GNU General Public License. This tag is designed for GPL images licensed by others (usually as part of a software package). Do not use it to tag images you created yourself. Use another free license.
{{LGPL}} – GNU Lesser General Public License. This tag is designed for LGPL images licensed by others (usually as part of a software package). Do not use it to tag images you created yourself. Use another free license.
.svg)