Is JavaScript Minifier free to use?

Yes, JavaScript Minifier is completely free with no sign-up required. It runs entirely in your browser.

Is my data safe with JavaScript Minifier?

Absolutely. JavaScript Minifier processes everything client-side in your browser. No data is ever sent to any server.

Does JavaScript Minifier work offline?

Yes! Since JavaScript Minifier runs entirely in your browser, it works even without an internet connection once the page is loaded. You can also install it as a PWA.

JavaScript Minifier — Free Tool

How to Use the JavaScript Minifier

Paste JavaScript code and get a minified version instantly. The tool removes single-line and multi-line comments, collapses whitespace, and shows before/after byte counts.

Features

Comment Removal — Strips // and /* */ comments while preserving string literals.

Whitespace Collapse — Reduces indentation and blank lines to minimal separators.

Stats Display — Original bytes, minified bytes, and savings percentage.

One-Click Copy — Grab the minified output for your build pipeline.

Common Use Cases

Quick Prototyping — Minify small scripts without setting up a build tool.

Performance Checks — See how much a JS file can be compressed.

Inline Scripts — Compress JavaScript for inline

HomeToolsJavaScript Minifier
JavaScript Minifier
Minify JavaScript by removing comments, whitespace, and line breaks. See compression stats and copy the result.
Client-side only
Input JavaScript
 Minified Output
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How to Use the JavaScript Minifier
Paste JavaScript code and get a minified version instantly. The tool removes single-line and multi-line comments, collapses whitespace, and shows before/after byte counts.
Features
Comment Removal — Strips // and /* */ comments while preserving string literals.
Whitespace Collapse — Reduces indentation and blank lines to minimal separators.
Stats Display — Original bytes, minified bytes, and savings percentage.
One-Click Copy — Grab the minified output for your build pipeline.
Common Use Cases
Quick Prototyping — Minify small scripts without setting up a build tool.
Performance Checks — See how much a JS file can be compressed.
Inline Scripts — Compress JavaScript for inline