What is Wikimedia Commons?
{{Infobox website | name = Wikimedia Commons | logo = Commons-logo-en.svg | screenshot = Commons screenshot.png | caption = | url = [http://commons.wikimedia.org commons.wikimedia.org] | commercial = No | type = Media repository | registration = Optional (required for uploading files) | owner = [[Wikimedia Foundation]] | author = Wikimedia community | launch_date = September 7, 2004 | current_status = Active | revenue = | content_license = Free }} '''Wikimedia Commons''' is a website owned by the [[Wikimedia Foundation]], based on a [[wiki]]. ==Overview== Anybody can upload [[Image|images]], [[Sound|sounds]], [[Video|videos]], and other [[multimedia]] files to Wikimedia Commons. The files uploaded to Wikimedia Commons can be used by any other Wikimedia Foundation project, like [[Wikipedia]] or [[Wiktionary]]. For example, Wikipedia uses images on Wikimedia Commons to include pictures in their [[encyclopedia]] articles. The files can also be freely used by anyone else because they have [[Free culture|free licenses]]. ==Categories== Wikimedia Commons has [[category|categories]], which are groups of files that have something in common or similar. For example, there is a category for pictures of cats. Wikimedia Commons is a [[multilingual]] website, meaning that it can be used in every [[language]]. However, some parts of Wikimedia Commons are only in English, like names of categories. ===Sound files=== Wikimedia Commons also has [[sound]] files. Not all of these are music. For example, there are recordings that read [[Word|words]] out loud. These files are used in [[Wiktionary]], a free [[dictionary]], to teach people how to say words. For every file on Wikimedia Commons, the person who made it has to let everybody use it and change it as much as they want, including companies (see [[Creative Commons]]). [[File:POL Lipno (jezioro w województwie pomorskim) 02.jpg|thumb|100px|The tenth million file uploaded]] =