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jindrapetrik
jpexs-decompiler
Java2020–2023
jindrapetrik / jpexs-decompiler

jpexs-decompiler

JPEXS Free Flash Decompiler (FFDec) is open-source Flash SWF decompiler and editor. Extract and edit ActionScript, images, sounds, shapes, fonts, and other SWF resources.

7Distinct people
8Mentions
0Explicit recommenders
6KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

JPEXS Free Flash Decompiler (FFDec) is open-source Flash SWF decompiler and editor. Extract and edit ActionScript, images, sounds, shapes, fonts, and other SWF resources.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year8 dated mentions

Observed mentions: 2020-07-01 22:03:03 UTC to 2023-11-19 17:38:20 UTC.

0123452020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments2023

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC101
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC202
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC514

What Hacker News says

8 sources
I recently found an awesome flash decompiler[0] and used it to get around site-locking on some swfs I downloaded years ago. Some swfs require files from the sites they are hosted on but I downloaded them and modified the swfs to find these files on a local server instead. So cool being able to modify the source code whereas back in the day I had to rely on hex editing to invert conditionals. [0] https://github.com/jindrapetrik/jpexs-decompiler
In Flash Museum
Some extra notes: > project issued their first progress report with getting dozens of ActionScript 2 based games working Dozens of _previously-broken_ games working. We had a majority of (single-player) AS2 games working for years now, with only several major missing features plaguing the remaining games. The biggest one of them (a very unintuitive way variables magically bind to "DOM" objects) was implemented very recently, hence the announcement. As for AS3, you could say the interpreter support has finally reached the turning point. It took 2 years from the first AS3-related commit to the first simplest game to "kinda-sorta work", and within the next couple of months up to now, so many games started to work that we stopped being able to count them. So yeah, we're very optimistic here :) EDIT: oh, also major shoutout to https://github.c
Read the rest
om/jindrapetrik/jpexs-decompiler which is effectively a full-blown low-level IDE for decompiling, debugging, analysing and manipulating (or even hand-crafting from scratch) SWFs. Without actually seeing all the ways the games abused Flash interpreter, it'd be borderline impossible to figure out Flash Player's various quirks. Further, it lets contributors create test SWFs without having to own old versions of Flash IDE.
In Still Have a Use for Adobe Flash? Ruffle Is Working to Safely Emulate It in Rust

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