Free text tools — updated for 2025 | All Text Tools
Text Tools› HTML Minifier

HTML Minifier

Compress HTML by removing comments and collapsing whitespace. See the exact byte savings before you deploy.

HTML Minifier

What HTML minification removes

  • HTML comments (<!-- … -->) — Development notes invisible to users, often 5–15% of raw HTML size in templated pages.
  • Redundant whitespace — Multiple spaces, tabs, and newlines between tags collapse to a single space. Browsers already ignore these.
  • Whitespace between tags — Spaces between >< tag boundaries are removed entirely where safe.

Tip: HTML minification gives the most benefit on pages generated by template engines with lots of whitespace-heavy markup. Combined with gzip on your web server, you typically get 70–80% size reduction on HTML files.

Frequently Asked Questions

Yes. The minification only removes whitespace that browsers already collapse and comments that browsers already ignore. The resulting HTML is semantically identical. The one edge case to be aware of is inline elements like <span> or text content where collapsing whitespace could merge words — this minifier only removes whitespace between tags, not inside text nodes.
Both. Gzip is applied by your web server (or CDN) at the network layer and compresses the HTML file by 70–80% regardless. HTML minification reduces the pre-gzip size, which means the gzip has less to compress and the result is slightly smaller. For high-traffic pages, combining both gives the best result. If your server doesn't use gzip, HTML minification matters significantly more.