About JavaScript Minifier
Minify JavaScript by removing comments and whitespace to shrink your scripts and load pages faster. Paste your JS and copy the compressed result.
How to Use
- Paste your JavaScript.
- The tool removes comments and unnecessary whitespace.
- See the before/after size.
- Copy the minified code for production.
Why Use This Tool?
- Accurate — built on precise, well-tested mathematical formulas.
- Instant — all calculations happen client-side for zero latency.
- Private — no data is sent to any server; your information stays on your device.
- Free — no sign-up, no limits, no hidden costs.
Frequently Asked Questions
Is minification the same as obfuscation?
No. Minification shrinks the code while keeping it functionally identical; obfuscation deliberately makes code hard to read. Minified code is smaller but still logically the same.
Will minifying break my JavaScript?
Simple whitespace/comment minification is safe for valid code. Aggressive renaming (done by full build tools like Terser) can break code that relies on function or variable names — this tool keeps it conservative.
Should I minify during development?
No — keep readable source for development and minify only your production build so errors and debugging stay manageable.