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Unless copyrighted images and text meet Wikipedia's non-free content allowance, we can't use them or create "derivative works" of them. That means we can't translate too much from a copyrighted foreign language source to include it here or prominently feature a copyrighted image inside of a picture we take (see below for more explanation of ...
Attribution To re-distribute text on Wikipedia in any form, provide credit to the authors either by including a) a hyperlink (where possible) or URL to the page or pages you are re-using, b) a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with the license, and which provides credit to the authors in a manner equivalent to the ...
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
A copyright holder cannot both retain non-free copyright elsewhere over their content, and license it for one-time use here with their permission, because Wikipedia's licensing scheme requires that its readers and end users be able to reuse the content under the free license notice that is posted at the bottom of every page.
Wikipedia uses grants free access to our text in the same sense as free software is licensed freely. This principle is known as copyleft.Wikipedia content can be copied, modified, and redistributed so long as the new version grants the same freedoms to others and acknowledges the authors of the Wikipedia article used.
Wikimedia Foundation has the rights to the trademarked Wikipedia and Wikimedia logo. Permission is granted to copy, distribute, and/or modify Wikipedia's text under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License and, unless otherwise noted , the GNU Free Documentation License. unversioned, with no invariant ...
Wikipedia:Image copyright tags: for a list of common templates and categories for permissible and prohibited materials. Wikipedia:Spotting possible copyright violations : What to look for if you're unsure whether something is permissible.
In general, this is not much of an issue on Wikipedia. The Coca-Cola logo (the quintessential example of a trademarked but not copyrighted logo) is used on the Coca-Cola page, but not the Pepsi Cola page – so no trademark problems result. For Wikipedia purposes, a "public domain" image does not need a non-free content rationale in order to be ...