Obfuscate pasted JavaScript
Transform code directly through the browser interface
Development
Security & Privacy
Utilities & System Tools
Obfuscator.io
JavaScript developers reach for Obfuscator.io when they need a quick, configurable way to make production code harder to inspect, copy, or modify.
Runs on
Web
Windows
macOS
Linux
Self-Hosted
Available on
Web
Built for
Startups
Small Business
Enterprise
Developers
Overview
What is Obfuscator.io?
What it changes
Obfuscator.io turns JavaScript into harder-to-read output using identifier renaming, string-array encoding, control-flow flattening, dead-code injection, self-defending checks, and console suppression. Presets speed up setup, but aggressive combinations can enlarge files or slow execution. It increases the effort needed to inspect shipped code; it does not make browser-side secrets safe.
Common deployment scenarios
- Protect a commercial browser bundle before release while retaining readable source internally.
- Make copied widgets, game logic, or licensing checks harder to alter quickly.
- Test conservative settings in the web interface, then move repeatable builds to the CLI or npm package.
Cost and access
The web tool is free to use, with no paid tier or account required. The underlying JavaScript Obfuscator project is open source and can run locally or in CI. The site suits one-off jobs; teams usually prefer the package because configuration stays versioned and builds remain reproducible.
Capabilities
Key features
Rename code identifiers
Replace variable and function names with generated forms
Encode string arrays
Move literals into harder-to-follow lookup structures
Flatten control flow
Restructure execution paths to resist casual inspection
Automate local builds
Use the open-source CLI or npm package
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