Does this provide real security?

No. Basic obfuscation is easily reversed by any developer using browser DevTools or online deobfuscators. This tool is intended for learning purposes only. For serious code protection consider licensing enforcement, server-side logic, or compiled targets like WebAssembly.

What does the High obfuscation level do?

High level applies all transformations: variable renaming to single/double-letter identifiers, hex/unicode encoding of all string literals, comment and whitespace removal, and wrapping the output in an eval() call with a base64-encoded payload.

Can the deobfuscator recover the original code?

Only partially. The deobfuscator can unescape hex/unicode strings and run a code prettifier, but renamed variables cannot be recovered because the original names are not stored anywhere.

Will the obfuscated code still run?

Yes — the transformations are semantically equivalent to the original. The output should execute identically in any modern browser. Always test your obfuscated code before deploying it.

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JavaScript Obfuscator (Basic)

Apply basic obfuscation transformations to JavaScript code: variable renaming, string encoding, and whitespace removal.

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About this tool

Learn how JavaScript obfuscation works by applying transformations directly in your browser — no server required. Choose from Low, Medium, or High obfuscation levels to rename variables, encode string literals as hex/unicode escapes, strip comments and whitespace, and optionally wrap output in an eval call. A Deobfuscator tab attempts to reverse basic obfuscation so you can compare before and after.

How to use

1 Paste your JavaScript code into the left panel.
2 Select an obfuscation level: Low (whitespace/comments only), Medium (+ variable rename), or High (+ string encoding + eval wrap).
3 Click 'Obfuscate' to see the transformed output in the right panel.
4 Switch to the 'Deobfuscate' tab to paste obfuscated code and attempt to recover a readable version.

Frequently Asked Questions

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