JavaScript Minifier & Beautifier
Compress your JS code for production, or format unreadable code back into a clean structure.
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About the JavaScript Minifier & Formatter
Managing JavaScript requires two completely different environments. During development, code needs to be readable and indented. During deployment, code needs to be as small as possible. The OnlinePaste.com JS Toolkit provides production-grade processing for both scenarios in a single interface.
Advanced Mangling & Compression
Unlike simple scripts that only delete whitespace, our minification engine natively parses your ES6+ Abstract Syntax Tree (AST). By toggling on Mangle Variables, the engine will safely rename long variable names (e.g., let userToken = ...) into single letters (e.g., let a = ...), shaving massive amounts of data off your payload.
Intelligent Code Beautifier
If you need to debug a minified script from an external library or recover a lost source file, simply paste the compressed code and click Beautify / Format. Our tool will instantly rebuild the code structure with your preferred indentation settings (tabs or spaces) so it is human-readable once again.