Adobe Flash 25
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The Adobe Flash format, SWF, previously known as Shockwave Flash or Macromedia Shockwave Flash, and alternatively known as the Small Web Format, is a file format primarily designed for creating interactive multimedia applications. The format iterates rapidly, often in line with new releases of Adobe Flash or Adobe Air. Prior to version 6 all SWF files were uncompressed, however version 6 introduced the option of using zlib compression. Version 13 introduced the option of using LZMA compression.
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| Extensions | .swf |
|---|---|
| MIME types | application/x-shockwave-flash |
| Signatures | 46575319 at byte 0 (SWF 25)43575319 at byte 0 (SWF 25 - zlib compressed)5a575319 at byte 0 (SWF 25 - LZMA compressed) |
| PRONOM | fmt/771 |
| Wikidata | Q29012120 |
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From PRONOM, Wikidata. Updated 2026-10-20.