ToolPremier Logo
ToolPremier

Home  ›  Developer Tools  ›  HTML Minifier

HTML Minifier
Paste any HTML and strip whitespace, comments, and optional redundancy – get a minified version ready for production with the file size reduction shown.
✓ Free✓ No signup✓ Privacy first✓ Runs in your browser
HTML Minifier – ToolPremier

Minify HTML in your browser · remove comments whitespace · copy or download · 100% client-side

How it works
Convert in three steps

1. Paste your HTML

Drop in a full HTML document, a template partial, or a component markup. Any valid HTML works.

2. Choose minification options

Toggle which optimizations to apply: remove comments, collapse whitespace, remove optional closing tags, minify inline CSS and JS.

3. Copy the minified output

Get the compacted HTML with the original and minified file sizes shown so you can see exactly how much was saved.

FAQ
Common questions
The main savings come from: stripping HTML comments, collapsing whitespace between tags (newlines, tabs, multiple spaces that serve no visual purpose), removing optional closing tags where the HTML spec permits omission, and removing attribute quotes around simple values. Minifying inline style and script blocks provides additional savings proportional to the amount of inline code.
Correctly written HTML minifies safely. The exception is pre and textarea elements where whitespace is meaningful – minifiers should preserve whitespace inside those elements. Also, inline JavaScript that uses HTML comments as fallbacks for very old browsers may break if comments are stripped. For modern codebases, these edge cases are rare.
HTML minification typically saves 5-20% of file size, depending on how much whitespace and how many comments the original contains. CSS and JS minification typically save 30-70%. For that reason, HTML minification is a secondary optimization – compress and minify CSS and JS first, then minify HTML for incremental gains.
For production deployments, integrate HTML minification into your build pipeline (Webpack, Vite, Gulp, or your static site generator) so it runs automatically. Use this tool for one-off minification – checking a specific template, minifying an email HTML file, or verifying what a minifier does to a particular piece of markup before adding it to your build.
Keep going
Related tools

JSON Minifier

Minify JSON payloads alongside your HTML.

Open tool

CSS Minifier

Minify the stylesheets linked from your HTML.

Open tool

JavaScript Minifier

Minify the scripts used on your page.

Open tool

Markdown Previewer

Convert Markdown content to HTML before minifying.

Open tool
About the HTML Minifier
HTML minification is a standard production optimization – removing comments, unnecessary whitespace, and redundant tags reduces the byte size of every page load. The savings per page are modest compared to CSS and JS minification, but across a high-traffic site or a CDN-cached template they compound into meaningful bandwidth reduction and marginally faster parse times. This minifier handles the full standard set of HTML optimizations: comment stripping, whitespace collapse, optional tag removal, and inline CSS/JS minification. It shows you the before and after file sizes so you can quantify the gain, and runs entirely in your browser so template code with internal structure never leaves your machine.
Benefits
  • Strips HTML comments, collapses whitespace, removes optional closing tags.
  • Minifies inline style and script blocks as part of the same pass.
  • Before/after file size comparison - see exactly how much each option saves.
  • Client-side processing - HTML templates with internal code or markup never leave your browser.
Privacy
All minification runs in your browser. HTML code is never uploaded or transmitted to any server.