Minify HTML Online
HTML minification removes unnecessary whitespace, comments, and optional closing tags from HTML documents, reducing the size of the payload sent to browsers. Smaller HTML pages parse faster, reduce time to first byte, and improve Core Web Vitals metrics. While web servers and CDNs can compress HTML with gzip, minification reduces the pre-compression size which further improves transfer times. This tool minifies HTML instantly in your browser, handling whitespace collapsing in text nodes, removing HTML comments (while preserving conditional comments), and stripping unnecessary attribute quotes where allowed by the HTML5 spec. It is useful for static site generators, email template preparation, and validating the output of your build pipeline.
FAQ
- Is HTML minification safe for all HTML?
- Minification is safe for standard HTML5. However, whitespace within <pre>, <textarea>, and inline elements is significant — good minifiers handle these cases correctly.
- Does this remove HTML comments?
- Yes. Standard HTML comments are removed. IE conditional comments (<!--[if IE]>) are typically preserved because they affect functionality.
- How much size reduction can I expect?
- HTML minification typically achieves 5-20% size reduction. Combined with gzip/Brotli compression by the web server, total savings are much larger.