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  • Topic: Adobe Flash, SWF, Adobe Flash Player
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  • Published : March 17, 2013
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SWF
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This article is about the file format .swf. For other uses, see SWF (disambiguation). |Adobe Flash (SWF) | |[pic] | |Filename extension |.swf | |Internet media type |application/x-shockwave-flash | |Magic number |CWS or FWS[1] | |Developed by |FutureWave Software, | | |later taken over by Macromedia and | | |Adobe Systems | |Type of format |Vector graphic animation |

SWF (pron.: /ˈswɪf/ SWIF)[2] is an Adobe Flash file format used for multimedia, vector graphics and ActionScript.[3] Originating with FutureWave Software, then transferred to Macromedia, and then coming under the control of Adobe, SWF files can contain animations or applets of varying degrees of interactivity and function. Currently, SWF is the dominant format for displaying "animated" vector graphics on the Web.[4] It may also be used for programs, commonly browser games, using ActionScript. SWF files can be generated from within several Adobe products: Flash, Flash Builder (an IDE) and After Effects, as well as through MXMLC, a command line application compiler which is part of the freely available Flex SDK. Other than Adobe products, SWFs can be built with open source Motion-Twin ActionScript 2 Compiler (MTASC), the open source Ming library and the free software suite SWFTools. There are also various third party programs that can produce files in this format, such as Multimedia Fusion 2, Captivate and SWiSH Max. Originally, the term SWF was used as an abbreviation for ShockWave Flash. This usage was changed to the backronym Small Web Format to eliminate confusion with a different technology, Shockwave, from which SWF was derived.[citation needed] |Contents | |1 History | |2 Description | |3 Licensing | |4 Related file formats and extensions | |5 See also | |6 References | |7 External links |

History
FutureWave Software, a small company later acquired by Macromedia, originally defined the file format with one primary objective: to create small files for displaying entertaining animations.[5] The idea was to have a format which could be reused by a player running on any system and which would work with slower network connections. Adobe acquired Macromedia in 2005.

On May 1, 2008, Adobe dropped its licensing restrictions on the SWF format specifications, as part of the Open Screen Project. However, Rob Savoye, a member of the Gnash development team, has pointed to some parts of the Flash format which remain closed.[6] On July 1, 2008, Adobe released code which allowed the Google and Yahoo search-engines to crawl and index SWF files.[7] Description

Originally limited to presenting vector-based objects and images in a simple sequential manner, the format in its later versions allows audio (since Flash 3), video (since Flash 6) and many different possible forms of interaction with the end user. Once created, SWF files can be played by the Adobe Flash Player, working either as a browser plugin or as a standalone player. SWF files can also be encapsulated with the player, creating a self-running SWF movie...
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