HTML Minifier

Minify HTML markup right in your browser. It strips comments and collapses runs of whitespace while protecting the contents of <pre>, <textarea>, <script> and <style> blocks so nothing breaks. See exactly how much smaller your file becomes, then copy or download the result.

Minification runs entirely in your browser. Your code is never uploaded.

How to use HTML Minifier

  1. Paste your HTML into the box.
  2. Keep “Remove comments” and “Collapse whitespace” ticked (or switch them off).
  3. Press “Minify”.
  4. Copy the result or download it as a .html file.

About this tool

Hand-written HTML is full of indentation, blank lines and comments that help people read it but add nothing for the browser. Serving that extra whitespace to every visitor slows pages down.

This minifier removes the fluff while being careful about the few places where whitespace matters — like <pre> blocks, text areas and inline scripts — so your page keeps working exactly as before.

Frequently asked questions

Is minified HTML safe to use?
Yes. It removes only comments and redundant whitespace, which browsers ignore anyway. The page renders and behaves the same, just from a smaller file.
Will it break my <pre> or code blocks?
No. The contents of <pre>, <textarea>, <script> and <style> tags are protected, so their internal spacing is left untouched.
How much smaller will my file get?
It depends on how much formatting and commenting your source has. Hand-written, commented HTML often shrinks by 20–40%. The tool shows the before/after size.
Does it minify the CSS and JavaScript inside too?
No — it handles the HTML markup. Use the CSS Minifier and JavaScript Minifier tools for those, then combine everything.
Is my code kept private?
Yes. Everything is processed locally in your browser; nothing is sent to a server.

Related tools

CSS Minifier Compress CSS by removing comments and unnecessary whitespace. JavaScript Minifier Compress JavaScript by removing whitespace, shortening names and optimizing code — safely, in your browser. HTML Viewer Paste HTML and preview it live in desktop, mobile and side-by-side tab views.

Browse all Developer Tools →

How to use Html Minifier

Paste your code, data, or URL into the Html Minifier input area. Select the appropriate mode or option, then process. The formatted or converted output appears clearly and can be copied or saved.

Practical benefits

Frequently asked questions

Is this tool free to use?
Yes. Html Minifier is fully free with no account or subscription required.
Does it upload my files?
No. All processing occurs locally within your browser session.
Can I use this for professional projects?
Yes, the tool is designed for both casual and professional use. Always verify critical outputs.