Download > Windows > Design & Photo > Flash Tools > JPEXS Free Flash Decompiler
JPEXS Free Flash Decompiler icon

JPEXS Free Flash Decompiler 4.0.4

Free opensource Flash SWF decompiler

Free Download

Average rating: 4.7/5 (3 votes)
Your rating: not submitted

JPEXS Free Flash Decompiler screenshotOpensource flash SWF editor and decompiler. Extract data, transform SWF to FLA, edit ActionScript, replace images, sounds, fonts and texts. Numerous output formats available. Works with Java on Microsoft Windows, MacOS or Linux.

User interface

- Ribbon panel with tabs and program icon
- Numerous graphical skins available
- Tag tree with categories (sprites, shapes, texts,...)
* Every tag shows character id and optional name taken from ExportAsset or other information
- Tags customizing existing characters tags are located under the parent node
- Two panel
* original preview in the left panel, editing on the right
- Drag and drop SWF files to general window opens file
- Drag tree item out of window exports item
- Customizing background color of previewed items
- Simple access to program configuration via Settings tab
- Optional classic user interface without Ribbon
- Multilanguage support: Czech, English, Dutch, Chinese, French, Hungarian, German, Polish, Portugese-Brasil, Portugese-Portugal, Russian, Swedish, Spanish, Ukrainian

Opening files

- Support for SWF files uncompressed and both LZMA and Zlib compressed
- Both AS1/2 or AS3 files supported
- GFx ScaleForm files support (*.GFX)
- Enables opening more than one file at once
- Reload button for reading file again
- List of currently opened files
- Opening binary files to search SWFs inside them
- SWF files buried in DefineBinaryData tags can be opened too

Displaying SWF objects

- SWF header
- Shapes (DefineShape 1-4 tags)
- MorphShapes (DefineMorphShape 1-2 tags)
- Sprites (DefineSprite tag)
- Buttons (DefineButton 1-2 tags)
- Texts (DefineEditText tags, DefineText1-2, No TLF support)
- Images (DefineBits, DefineBitsJPEG2-4, JPEGTables, DefineBitsLossless1-2 tags)
- Fonts (DefineCompactedFont, DefineFont1-3, DefineFontInfo1-2, DefineFontName tags)
* Characters preview, Name, descent, ascent, leading, bold or italic flags
- Video (DefineVideoStream, VideoFrame tags)
- Sound (SoundStreamHead1-2, DefineSound, SoundStreamBlock tags)
- BinaryData (DefineBinaryData tag)
- Scripts (DoABC, DoInitAction, DoABCDefine, DoAction, BUTTONCONDACTION, DefineButton tags, CLIPACTIONRECORD)
* ActionScript source, P-code, Constant pool, Hex, Control Flow Graph
- Frames (PlaceObject1-3 tags, ShowFrame, RemoveObject1-2, PlaceObject4 without AMF)
- Entire SWF preview
- Generate Snapshot of displayed object to clipboard
- Easy Folder view with tag previews
- Basic tag info panel


  • Useful tool for web designers and Flash developers.
  • Supports SWF to FLA and EXE conversion.


  • Takes a long time to extract files.
Name JPEXS Free Flash Decompiler
Version 4.0.4
Developer | see all products from this developer
Product Homepage JPEXS Free Flash Decompiler
License Free (Freeware)
Last Week Downloads 8
All Time Downloads 2,985
Filename ffdec_4.0.4_setup.exe
Filesize 8.4MB
MD5 Checksum 6D2936DAB0E5F74698CF679DD9A7310A
OS Support Win 7/8/Vista/XP
Category Design & Photo

100% CLEAN Certification

BadgeJPEXS Free Flash Decompiler has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
JPEXS Free Flash Decompiler 13.0.3 February 24, 2021 - Latest Version
JPEXS Free Flash Decompiler 6.0.1 July 17, 2015
JPEXS Free Flash Decompiler 5.3.0 June 11, 2015
JPEXS Free Flash Decompiler 4.0.5 December 05, 2014
JPEXS Free Flash Decompiler 4.0.4 November 24, 2014

Download the free JPEXS Free Flash Decompiler