Commons:Projektets omfattning/sammanfattning
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- Detta är en sammanfattning av den fullständiga projektomfattningspolicyn.
Wikimedia Commons (this site) is a repository of free, educational media files used by Wikipedia, other Wikimedia projects, and others. The free part is very important – it's a founding principle of Commons that we should only host content that can be used by anyone for any purpose.
Commons does not host fair use content or other non-free content, such as most content published on the Internet and elsewhere. Commons does not host encyclopedic articles or other non-media content. We also don't host content unless it has educational value.
For a file to be welcome on Wikimedia Commons it must meet the following criteria:
Must be freely licensed or public domain
It's a founding principle of Commons that we should only host content that can be freely used by anyone for any purpose. Therefore, Commons can only accept two types of content:
- Content whose copyright holder has explicitly agreed to allow anyone to use it for any purpose
- Content that is not protected by copyright
Recently created works such as photos, drawings and videos are almost always protected by copyright – even if there is no copyright notice. Copyright protection means that the copyright holder has the right to specify who may use the work and how they may use it. One way to specify this is by using a copyright license. Only the copyright holder can grant a license. The copyright holder is usually the person who created the work, such as a photographer or painter. Wikimedia Commons only accepts copyrighted works if they are covered by a license that allows anyone to use them freely for any purpose.
Commonly used free licenses include Creative Commons Attribution 
and Creative Commons Attribution Share-Alike 
without Non-Commercial 
or No-Derivatives 
restrictions, but there are also other accepted licences.
Common examples of licenses that are not accepted on Commons include all Creative Commons licenses with Non-Commercial or No-Derivatives restrictions.
Content that is not protected by copyright is said to be in the public domain. Public domain content is accepted at Commons, but you must be able to explain why the content is in the public domain. Common reasons include that the content is too simple to be protected by copyright, that the copyright expired or that the copyright holder explicitly released it into the public domain. Merely making a work accessible to the public does not mean that it is released into the public domain.
Copyrighted content without any indication of a free license is not accepted, even in the absence of a copyright notice. Content explicitly marked as non-free, including content with All Rights Reserved or fair use notices is not accepted.
Must be realistically useful for an educational purpose
Wikimedia Commons only hosts content that is useful for educational purposes. This means content that could be used by Wikipedia, other Wikimedia projects, or other projects that provide knowledge, instruction or information. Files don't have to be in use on any other project to be hosted here, but they must have a reasonable potential use.
Examples of content that is not realistically useful for educational purposes in most cases:
- Private image collections such as private party photos, photos of yourself and your friends and holiday snapshots. A small number of personal images used on Wikimedia project user pages are allowed per user.
- Self-created artwork without obvious educational uses
- Files created or uploaded for purposes of vandalism or attack
- Advertising or self-promotion
- Low-quality content that does not add value beyond our existing coverage of the same topic
For details, see the full project scope policy.
Must be a media file
Commons only hosts media files such as photographs, scanned images, diagrams, animations, audio (e.g. music or spoken word) and video clips.
Commons does not host encyclopedic articles or other plain-text content, and it does not host computer programs in any format (including executable files and source code).
Must be an allowable free file format
För tillfället tillåts följande format:
- Bilder: SVG (för vektorgrafik), PNG (förlustfritt format), JPEG (för fotografier), GIF ("delvis" förlustfritt format, men PNG föredras), TIFF (förlustfritt format, men PNG föredras), XCF (tillåter lager och text).
- Ljud: Ogg-behållare (använder FLAC-, Speex-, Opus- eller Vorbis-kodekar med filändelser
.oga), MIDI, WAV (16-bitars PCM-format och 32-bitars okomprimerat IEEE-format) eller FLAC (.flac).
- Video: WebM använder videokodeket VP8 med Vorbis för ljudet eller Ogg med videokodeket Theora. Ny programvara stödjer filändelser
.ogvför Theora-video utan eller med Vorbis-ljud, RFC 3534.oggkan fortfarande användas istället för RFC 5334.ogxför Theora-video med andra Ogg-ljudkodekar - Help:Converting video.
- Animering: GIF, APNG, Animerad SVG.
- 3D structures: STL.
Inaktiverad för tillfället
Medan SXW, SWC, SXD och SXI (OpenOffice.org 1.x), såväl som ODT, ODS, ODG och ODP (OpenDocument) är teoretiskt tillåtna enligt de bestämmelser som liknar Commons:Scope#PDF_and_DjVu_formats, är dessa format för tillfället inaktiverade eftersom vi för närvarande inte kan hindra folk från att att dölja skadligt eller på annat sätt otillåtet innehåll inom Openoffice's ZIP-baserade behållarformat.
För en längre lista över filformat som inte stöds, se Commons:File_types#Unsupported_file_types.
Questions
If you have questions about whether a certain file is within the project scope of Commons, you can ask at the help desk.