Minifier tools
JavaScript Minifier
Minify or beautify JavaScript snippets, validate output size, clear the editor, and copy optimized code.
Use examples, compression stats, copy, export-style review, and reset controls without sending code out.
Preserve literals
The parser keeps strings, templates, and regex literals intact while removing noise.
Beautify reset
Reformat compressed snippets for easier inspection and debugging.
Copy output
Copy minified or beautified code after checking size changes.
JavaScript Optimization Notes
Quick snippets
This tool is useful for small scripts and code review, while full apps should use a bundler or Terser.
Validate behavior
Run tests or browser checks after minifying complex generated scripts or syntax edge cases.
FAQ
What does JavaScript minification do?
It removes comments and unnecessary whitespace while preserving string literals, template literals, and regex literals.
Can I beautify compressed JavaScript?
Yes. Use Beautify to reset dense code into a readable multiline shape for inspection.
Is pasted JavaScript uploaded?
No. Minify, beautify, validation, copy, and clear actions run locally in your browser.