All minification runs locally in your browser. No HTML code you enter is ever transmitted to a server. Always keep a backup of your original source file.
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Compress & Optimize Your HTML — Instantly In Your Browser
Paste or upload your HTML, choose from 10 optimization options, and get fully minified markup in one click. Remove comments, collapse whitespace, minify inline CSS and JS, strip redundant attributes, and export as HTML, JavaScript string, or JSX. Everything runs in your browser — your code never leaves your device.
All minification runs locally in your browser. No HTML code you enter is ever transmitted to a server. Always keep a backup of your original source file.
.html or .htm file from your computer, or click Load Sample to instantly populate the editor with a demo page so you can try the tool right away.An HTML minifier removes all characters from an HTML document that the browser does not need to render it correctly — whitespace, line breaks, indentation, comments, optional closing tags, and redundant attributes. The result is a compact file that is functionally identical to the original but significantly smaller, which reduces page load time and improves Core Web Vitals scores.
No. This tool runs entirely in your browser. Your HTML is never transmitted to any server or stored anywhere. Once you close the tab, the data is gone.
When these options are enabled, the minifier also compresses the content inside <style> tags and <script> tags in your HTML document, not just the HTML structure itself. This provides additional file size savings beyond just collapsing whitespace and removing comments from the HTML markup — especially significant for pages with embedded stylesheets or scripts.
Yes, in all modern browsers. The HTML5 specification explicitly defines optional closing tags — elements like </li>, </p>, </td>, </tr>, </thead>, </tbody>, </dt>, and </dd> do not require a closing tag. Browsers handle these correctly by specification. If you are targeting very old or non-standard environments, you may uncheck this option.
The Export As JavaScript String option wraps your minified HTML in a JavaScript template literal, making it easy to embed HTML markup directly in a JavaScript or Node.js file. The Export As JSX option formats the output as a React functional component, useful for embedding static HTML markup in a React project. Both formats are copied to your clipboard for immediate use.
Yes — always. Minified HTML is very difficult to read and edit. The standard practice is to keep your original, well-formatted source file for development and deploy only the minified version to production. Never overwrite your source with the minified output.
Minification typically reduces HTML file size by 15% to 35% depending on how much whitespace, comments, and redundant code is in the original. Enabling the inline CSS and JS minification options can push savings higher for pages with embedded stylesheets or scripts. The Compression Results panel shows the exact byte savings for your specific file after each run.
Disclaimer: QuickITTools.com and EnterPlanet LLC strive to make our tools as accurate as possible. This tool is provided for informational and educational purposes only. All minification is performed locally in your browser — no code is transmitted to our servers. Always maintain a backup of your original source HTML. The minified output should be tested thoroughly before deployment to production environments.