Free online HTML minifier and compressor. Reduce HTML file size by removing whitespace, comments, optional tags, and unnecessary attributes. Optimize page load speed for better Core Web Vitals and SEO performance. Essential for web developers optimizing website performance. 100% browser-based.
100% browser-based — your data never leaves your device
Minify and compress HTML code by removing whitespace, comments, and unnecessary attributes.
Copy your HTML source code and paste it into the input textarea above.
Press Minify to compress your HTML by removing whitespace, comments, and optional attributes.
Copy the minified HTML for use in production. Compare the size savings shown below.
Drop a file here or click to browse
Ctrl+Enter to minify
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HTML Minifier is a free online text tool that minify and compress html code by removing whitespace, comments, and unnecessary attributes. It works entirely in your browser — no downloads, no installations, and no server uploads required. content writers, developers, technical writers use HTML Minifier when they need a fast, privacy-respecting way to process text data without installing additional software. It supports capabilities such as whitespace removal, comment stripping, attribute minification. Additional features include size comparison. Common use cases include reducing html file size for faster website page load times, preparing production-ready html templates for deployment, removing unnecessary whitespace and comments from generated markup. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes HTML Minifier ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
HTML Minifier is a free online text tool that helps you minify and compress html code by removing whitespace, comments, and unnecessary attributes. Key capabilities include whitespace removal, comment stripping, attribute minification. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to reducing html file size for faster website page load times.
Copy your HTML source code and paste it into the input textarea above.
Press Minify to compress your HTML by removing whitespace, comments, and optional attributes.
Copy the minified HTML for use in production. Compare the size savings shown below.
| Category | Details |
|---|---|
| Input Limits | Maximum input length: Browser memory bound |
| Encoding support: UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252 | |
| Supported Formats | Plain text, UTF-8, ASCII, Unicode, Percent-encoding (RFC 3986) |
| Browser Engine |
|
All operations run entirely in your browser using built-in Text APIs. No server uploads, no data storage, and no third-party requests.
HTML Minifier is ideal when you need to reducing html file size for faster website page load times without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for advanced text manipulation within an IDE, consider using VS Code. For for batch text processing on servers, sed/awk (command-line) may be a better fit. HTML Minifier fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. HTML Minifier processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
Minification removes unnecessary characters like whitespace, comments, and optional quotes without changing how the HTML renders in the browser.
Yes. Minified HTML is optimized for file size, not readability. Use the HTML Formatter to beautify minified code when you need to edit it.
Removes unnecessary spaces, tabs, and newlines while preserving content and structure.
Removes HTML comments to reduce file size without affecting rendering.
Optionally removes optional quotes and boolean attribute values where safe.
See original vs minified size with the exact byte savings displayed.
HTML Minifier is useful in a variety of scenarios across different workflows:
Reducing HTML file size for faster website page load times
Preparing production-ready HTML templates for deployment
Removing unnecessary whitespace and comments from generated markup
While minification preserves functionality, always test your pages after minifying to ensure nothing broke. Some edge cases with whitespace-sensitive content can cause issues.
For maximum performance, minify HTML, CSS, and JavaScript together. The combined savings from all three can reduce page weight by 50% or more.
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