JPEXS Free Flash Decompiler

If you are looking for the decompiler itself, visit https://github.com/jindrapetrik/jpexs-decompiler

NEW 03/18/2023: We have got a new blog where we post some interesting SWF internals info.

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List of issues

#2438 The file is many kilobytes in size

Author:

Valeriya

Date created: 04/05/2025, 7:20:37 am

Type: question

Visibility: Everybody

Assigned to:

Labels: GFX

State: opened Help

Hello. I use your program to configure GTA 5 files. The file starts to weigh heavily after being saved in the program. For example, instead of 800 kilobytes, it becomes 31,000 kilobytes. How can this be fixed? Maybe there is a cache cleanup function or something like that?

1.jpg (5 KiB)

JPEXS

04/06/2025, 9:28:39 am

Hello. It depends on what you edit, but generally, the GFX/SWF file can change its size even with minimal changes, because of for example different ZLIB compression setting. We cannot technically ensure that the size of the SWF file will remain unchanged. I don't recommend scenarios like "We must make the gamefile the same size or smaller otherwise we can't import it back". Also I don't feel like updating the FFDec to make this anyway easier. The size changes...

State: new→opened