Will minifying break my code?

This is a lightweight regex-based minifier that strips comments and collapses whitespace. It is safe for most code, but always test the output since edge cases inside strings can occasionally be affected.

Is my code uploaded to a server?

No. All minification happens locally in your browser using JavaScript, so your code never leaves your device.

🗜️

HTML / CSS / JS Minifier

Minify HTML, CSS or JS by stripping whitespace and comments.

Loading tool…

How to use the HTML / CSS / JS Minifier

1Pick the code type: HTML, CSS or JavaScript.
2Paste your code into the input box.
3Copy the minified output and view the size saved.

About the HTML / CSS / JS Minifier

Free online HTML, CSS and JavaScript minifier. Strip comments and whitespace, shrink file size, and copy compact code instantly in your browser. No uploads.

Part of our Developer Tools collection. Browse all tools.

Frequently asked questions

Will minifying break my code?: This is a lightweight regex-based minifier that strips comments and collapses whitespace. It is safe for most code, but always test the output since edge cases inside strings can occasionally be affected.
Is my code uploaded to a server?: No. All minification happens locally in your browser using JavaScript, so your code never leaves your device.