Readable JavaScript Output
Readable JavaScript will appear here
Paste obfuscated JavaScript on the left. Or load sample data to see decoded output.
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JavaScript Deobfuscator
Decode hex, Unicode, and minified JavaScript without running the code
How to deobfuscate JavaScript
Paste obfuscated JavaScript on the left and copy or download readable output on the right.
1
Paste obfuscated JavaScript
Paste minified or encoded JavaScript into the editor. If you want a quick demo, click “Sample”.
Obfuscated JS input - Works with minified code, encoded strings, and hex-heavy snippets.
Static processing - Input code is transformed as text and is not executed.
Obfuscated JavaScript Input
function _0x2a4b(a,b){var m="\x48\x69";return b["\x6c\x65\x6e\x67\x74\x68"]>=0x8;}2
Review readable JavaScript
The JavaScript deobfuscator decodes common escapes and formats the result as you type.
Decoded strings - Hex, Unicode, and octal escapes become readable characters.
Readable structure - Minified code is split into indented lines for inspection.
Readable JavaScript Output
function _0x2a4b(a, b) {
var m = "Hi";
return b.length >= 8;
}3
Copy or download JavaScript
Use “Copy” to copy the readable output, or “Download” to save it as a .js file for review.
One-click copy - Copy deobfuscated JavaScript to your clipboard.
Download .js - Save readable JavaScript for audits, notes, or debugging.
Copy or download readable JS
2 Actions
Download
Download JavaScript as output.js
Copy
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Tip: deobfuscation improves readability, but suspicious code should still be reviewed carefully.
JavaScript Deobfuscator FAQs
Common questions about decoding and beautifying obfuscated JavaScript
A JavaScript deobfuscator converts obfuscated, encoded, or heavily minified JavaScript into code that is easier to read. This JavaScript deobfuscator decodes common hex and Unicode escape sequences, converts hexadecimal number literals, simplifies simple property access, collapses basic string concatenation, and formats the result so developers can inspect the logic more quickly.
No. The JavaScript deobfuscator performs static text transformations in your browser and does not run eval, Function, or any code from your input. This is important when reviewing suspicious scripts, third-party snippets, or code that may contain unsafe behavior.
No deobfuscator can reliably recover original names after an obfuscator has replaced them with generated identifiers. This tool keeps existing identifiers, but it can make the code structure readable by decoding strings, converting number formats, and adding indentation and line breaks.
This JavaScript deobfuscator handles common lightweight patterns such as \xNN hex escapes, \uNNNN Unicode escapes, octal string escapes, 0x hexadecimal number literals, bracket property access like ["length"], simple string concatenation, and basic minified JavaScript formatting. Advanced array lookup tables, control-flow flattening, anti-debugging logic, and VM-style obfuscation may still require manual analysis.
Yes. A JavaScript beautifier mainly adds spacing and indentation. A JavaScript deobfuscator also attempts to decode intentionally hidden string and number representations before formatting the code. For plain minified JavaScript, beautification may be enough; for encoded strings or hex-heavy scripts, deobfuscation is more useful.
Yes. The JavaScript deobfuscator is free to use with no account required. Paste code, load the sample, copy the readable output, or download it as a .js file. Processing runs client-side in your browser.
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