100% client-side, nothing ever leaves your browser
Minify HTML
Paste HTML and get a smaller, safely minified version — unnecessary whitespace and comments removed, valid markup preserved.
How HTML minification works
A dedicated HTML-aware minification library parses your markup and strips only what's safe to remove — entirely inside your browser.
Paste your HTML
Paste a full page or a fragment of markup into the input box.
Automatic minification
Whitespace and comments are collapsed, while content inside <pre>, <textarea>, and scripts is left untouched.
Copy or download
Review the byte savings, then copy the minified HTML or download it as a file.
Privacy note: minification runs entirely in your browser using a JavaScript library loaded from a CDN. Your HTML is never uploaded, logged, or stored on a server.
Common uses
Reducing page weight
Smaller HTML downloads and parses faster, which can meaningfully help page load performance.
Preparing static exports
Minify statically generated or templated HTML before deploying it to production.
Cleaning up copy-pasted markup
Strip stray comments and excess whitespace from HTML copied out of another tool or editor.
Embedding HTML snippets
Produce a compact snippet to embed inline in emails, widgets, or CMS fields with tighter size limits.
Frequently asked questions
Will minifying break my HTML?
No. This tool uses html-minifier-terser, a mature HTML-aware minification library, rather than naive text substitution, so it understands tags, attributes, and content types and only removes whitespace and comments that are safe to remove.
Does it preserve whitespace inside <pre> and <textarea>?
Yes. Whitespace inside elements where it is semantically significant, such as <pre>, <textarea>, and <script>/<style> content, is left untouched.
Can I keep comments in the output?
Yes. Comment removal is optional — toggle it off if you want to keep HTML comments such as templating markers or licensing notices.
Does this also minify inline CSS and JavaScript?
Yes. Content inside <style> and <script> tags is minified as well, using the same underlying library's CSS and JavaScript minification support.
Is my HTML uploaded anywhere?
No. Minification runs entirely in your browser using a JavaScript library loaded from a CDN. Your HTML is never sent to a server.
How much smaller will my file be?
It depends on how much formatting whitespace and how many comments the original file has. Heavily indented, comment-rich HTML often shrinks the most; already-compact HTML may see little change.
More tools
Additional utilities from the same toolkit.