Every space, line break and HTML comment in your markup costs bytes, and on a busy site those bytes add up to slower pages and worse Core Web Vitals. Our free HTML Minifier squeezes the air out of your code: it strips comments, collapses whitespace runs to single spaces and removes the gaps between tags — while leaving the contents of <pre>, <textarea>, <script> and <style> blocks completely untouched, so code samples and embedded scripts never break. No signup, no upload, no waiting.
Everything happens inside your browser, so your markup never leaves your computer — safe for client projects and unreleased pages. The tool shows you the before and after in bytes plus the exact percentage saved, so you can see what the cleanup was worth. Copy the minified result straight into your template or download it as a ready-to-use .html file with one click.
Use it before pasting HTML into email templates, CMS custom-HTML blocks, or landing-page builders where every kilobyte counts. Smaller markup parses faster, transfers faster, and gives search engines less noise to chew through.
HTML Minifier
Minify HTML safely — strips comments and whitespace, preserves pre and script blocks.
How to use
- Paste your HTML into the text box.
- Click Minify HTML.
- Check the byte counts and percentage saved above the result.
- Click Copy Minified to copy it, or Download .html to save the file.
- Test the minified page in a browser before deploying it live.
- Click Clear to start over with new markup.
FAQs
Will minifying break my page?
No — the minifier only removes comments and collapses whitespace. The contents of <pre>, <textarea>, <script> and <style> tags are preserved verbatim, and whitespace inside text that affects rendering (like spaces between words) is kept as a single space. Still, always preview the result before deploying.
Is my HTML uploaded anywhere?
No. Minification runs entirely in your browser with JavaScript, so your code never leaves your device — safe for client work and private projects.
How much smaller will my HTML get?
It depends on how the markup was written. Hand-written, heavily indented HTML with comments often shrinks 20–40%; already-compact output from a framework may shrink only a few percent. The tool shows the exact saving for your input.