Developer tools

HTML Minifier

Collapse whitespace and strip comments from HTML — preserves pre/script/style.

Source HTML

393 B

Minified

<!doctype html><html lang="en"><head><meta charset="utf-8" /><title>Hello, world</title></head><body><article class="card"><h1>Greetings</h1><p> This page exists only to demonstrate whitespace collapsing. </p> <pre>  spaces  inside  pre  are  preserved  </pre> </article></body></html>

285 B−27.5%

Content inside <pre>, <textarea>, <script>, and <style> is preserved verbatim. Conditional comments (<!--[if IE]>) and SSI directives are also kept.

How it works

1Paste an HTML document or fragment.
2See the minified output and the byte savings.
3Copy and ship — content inside protected tags is untouched.

Use cases

Pre-minify static templates before publishing.
Inline HTML in JavaScript without trailing whitespace.
Reduce the size of email templates.

Frequently asked questions

Is content inside <pre> changed?

No. Pre, textarea, script, and style are extracted and re-inserted verbatim.

Are conditional comments removed?

No. Comments like ) are kept because they have side effects.

Will it break my page?

For well-formed HTML, no. Hand-written HTML that relies on text-node whitespace for layout (rare today) may render slightly differently.

How to minify HTML safely

The trick to minifying HTML without breaking pages: knowing which tags collapse whitespace and which preserve it. Here's how it works.

JSON Formatter & Validator

Beautify, minify, and validate JSON.

Base64 Encode/Decode

Encode and decode Base64, UTF-8 safe.

URL Encoder/Decoder

Percent-encode and decode URL components safely.

HTML Encoder/Decoder

Escape and unescape HTML entities — named and numeric.