{"@context":"https://schema.org","@type":"SoftwareApplication","name":"JavaScript Obfuscator","description":"Obfuscate JavaScript code to protect it from reverse engineering. Basic code obfuscation for JavaScript applications.","url":"https://www.devtools.tools/js-obfuscator","applicationCategory":"Security Tools","operatingSystem":"All","browserRequirements":"Modern web browser","permissions":"none","isAccessibleForFree":true,"screenshot":"https://www.devtools.tools/og?title=JavaScript%20Obfuscator&category=Security%20Tools","author":{"@type":"Person","name":"Göksel Yeşiller","url":"https://github.com/mryesiller"},"publisher":{"@type":"Organization","name":"DevTools","url":"https://www.devtools.tools","logo":{"@type":"ImageObject","url":"https://www.devtools.tools/assets/logo-light-v11.svg"}},"offers":{"@type":"Offer","price":"0","priceCurrency":"USD","availability":"https://schema.org/InStock"},"keywords":"javascript obfuscator, js obfuscator, code obfuscation, protect javascript, minify javascript, hide code, js protector","mainEntity":{"@type":"WebApplication","name":"JavaScript Obfuscator","applicationCategory":"DeveloperApplication"}}{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.devtools.tools"},{"@type":"ListItem","position":2,"name":"JavaScript Obfuscator","item":"https://www.devtools.tools/js-obfuscator"}]}{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What does the obfuscator do to my code?","acceptedAnswer":{"@type":"Answer","text":"It rewrites JavaScript into a functionally equivalent but visually unreadable form by renaming variables and properties to short meaningless identifiers, splitting or encoding strings, inserting dead branches and opaque predicates, and optionally transforming member access (foo.bar → foo[\"bar\"]). The script still runs identically in the browser; it just becomes painful to read or copy."}},{"@type":"Question","name":"Is obfuscation real protection?","acceptedAnswer":{"@type":"Answer","text":"No — it is a speed bump, not a security control. Anyone who opens DevTools and steps through the code can recover the original logic with reasonable effort, so obfuscation raises the cost of reverse engineering but never stops a determined reader. Treat anything truly secret as server-side only, and use obfuscation on top of that, not instead of it."}},{"@type":"Question","name":"What is the difference between obfuscation and minification?","acceptedAnswer":{"@type":"Answer","text":"Minification only strips whitespace, shortens names, and reduces file size; decompilers recover the original almost verbatim. Obfuscation deliberately mangles structure and identifiers to make comprehension harder, and is usually applied on top of a minified build as a second pass."}},{"@type":"Question","name":"Is my source code uploaded?","acceptedAnswer":{"@type":"Answer","text":"No. Obfuscation runs entirely in your browser using the open-source javascript-obfuscator library; nothing you paste is sent to a server."}}]}
JavaScript Obfuscator
Protect your JavaScript code with variable renaming and string encoding
Obfuscation Options
Obfuscation Details
- Rename Variables: Replaces variable/function names with hex identifiers (_0x1a2b)
- Encode Strings: Converts strings to hex escape sequences
- Minify: Removes whitespace, comments, and unnecessary formatting
- Makes code harder to read and reverse-engineer
Frequently asked questions
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