Tool/Unobfuscator to unobfuscate a JS script. Javascript snippets or lines codes can be minified or obfuscated in order to reduce their size or to protect them.
Javascript Unobfuscator - dCode
Tag(s) : Programming Language
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Javascript Unobfuscator
Javascript Deobfuscator / Decoder
Answers to Questions (FAQ)
What is Javascript obfuscation? (Definition)
Obfuscation is to turn JS language native syntax into a human unreadable code (or very difficult to understand). This work is done by Javascript Obfuscators that minify/compress the original code. This is a way to protect the code so that it is difficult to reverse engineer. It's also a game to write source code with unreadable and unnatural syntax.
The techniques use ASCII codes (to replace characters with letters), changing names of variables by short non-defined names, overcoding such as base64, and so on.
What is Javascript Deobfuscation?
The deobfuscation JS is the reverse of the obfuscation. The goal is to rewrite / decode / deobfuscate / decrypt / uncompress the javascript obfuscated code to retrieve native JS. Tools are called unobfuscator or deobfuscator.
What is JSFuck?
JSFuck is a method for writing valid JavaScript with 6 characters: []()+!., similar to obfuscation.
How to decrypt JS coded with PACKER?
Go to here website
Copy paste this in the address bar:javascript:for (i=0;i < document.forms.length;++i) {for(j=0;j < document.forms[i].elements.length;++j){document.forms[i].elements[j].removeAttribute("readonly"); document.forms[i].elements[j].removeAttribute("disabled");}}
Paste the obfuscated code in the lower textarea and click Decode to get something like:
Example: var … = …;
eval(…);
Replace the eval with a document.write
Execute javascript with a JavaScript editor.
What is Javascript minification?
JS minification is similar to obfuscation but for reasons of size and bandwidth saving. The principle is to reduce the size of the code, even if it makes it unreadable.
Source code
dCode retains ownership of the "Javascript Unobfuscator" source code. Any algorithm for the "Javascript Unobfuscator" algorithm, applet or snippet or script (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or any "Javascript Unobfuscator" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) or any database download or API access for "Javascript Unobfuscator" or any other element are not public (except explicit open source licence like Creative Commons). Same with the download for offline use on PC, mobile, tablet, iPhone or Android app.
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