I'm having serious problems deobfuscating a JavaScript file at work. This file is inside a web app that I was left in charge to improve it. The problem is that I can do it without having access to this file and the previous programmer that obfuscated it is not reachable.

I tried many ways of deobfuscation but none worked.

Can someone please help? The code it's in the link bellow:

Link for The code

  • 1
    Did you look through this question? While you will probably be able to reverse most of the obfuscation, editing the resulting file will still be a big headache.
    – DCoder
    Commented Jun 8, 2014 at 10:18
  • The link is dead. I'm suprised people didn't ask you to include the code in the body of the question
    – Dave
    Commented Aug 2, 2017 at 7:40

1 Answer 1


There are a few tools that you might try when wanting to analyze JavaScript:

See also a few tutorials on analyzing obfuscated JavaScript:

And, finally, a few questions that have been already answered here:

  • poisonJS leads to porn site and malware. DO NOT CLICK
    – Han
    Commented Mar 8, 2022 at 3:01
  • @Han Thanks for mentioning it, I removed the link.
    – perror
    Commented Mar 8, 2022 at 10:22
  • @perror the JSDetox link does not work, actually a lot of the links don't work. And why is v8 in this list? Commented Oct 13, 2022 at 9:05

Not the answer you're looking for? Browse other questions tagged or ask your own question.