Skip to content
Aadi Maanav

HTML / CSS / JS Minifier

Minify HTML, CSS or JavaScript by stripping comments and whitespace, with size savings shown.

100% Free
All tools are free to use
Instant Process
Get results in seconds
Browser-Based
Files never leave your device
Privacy First
No uploads, 100% safe

About HTML / CSS / JS Minifier

Quickly minify HTML, CSS and JavaScript to reduce file size. The tool removes comments (while preserving string literals) and collapses insignificant whitespace, then shows how many bytes you saved. Everything runs locally in your browser.

How to use

  1. 1

    Choose CSS, JS or HTML.

  2. 2

    Paste your code into the input panel.

  3. 3

    The minified result appears instantly with the percentage saved.

  4. 4

    Copy the minified output.

Tip: All processing is performed locally in your browser with zero loss in quality and no upload limits.

Frequently Asked Questions

It's conservative — comments are removed while respecting strings, and whitespace is collapsed without merging tokens. For maximum JS compression, use a full build tool like esbuild or Terser.

All processing happens locally in your browser. Your files are never uploaded anywhere.

More Developer Tools You Might Like

Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to text, instantly and privately.

Color Converter

Convert colors between HEX, RGB and HSL with a live preview and channel sliders.

Hash Generator

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text, instantly.

JSON Formatter

Format, validate and minify JSON instantly — paste in, get clean output, copy with one click.

JWT Decoder

Decode and inspect a JWT's header and payload, with expiry checks — all in your browser.

Browse all 150+ free tools