HTML Minifier — Free Online Minifier
Minify HTML by removing comments, whitespace, and redundant code
All processing happens locally. No data is sent to any server.
Minified HTML loads faster because there's less data to transfer. Our HTML Minifier strips comments, collapses whitespace between tags, removes line breaks, and trims unnecessary characters — all while preserving the document's visual rendering and functionality. Paste your HTML into the input area and click "Minify". The tool removes HTML comments (<!-- ... -->), collapses multiple whitespace characters into single spaces, removes line breaks between tags, and trims leading/trailing whitespace. The result is a compact version that renders identically to the original but with a smaller file size. After minification, you'll see the original size, minified size, and percentage saved. This is useful for optimizing production HTML, reducing email template sizes, or compressing HTML snippets for embedding. The minifier preserves all tags, attributes, and content — it only removes cosmetic whitespace and comments. All processing happens in your browser. Your HTML never leaves your device. For related tools, try our [CSS Formatter](/tools/css-formatter) to minify stylesheets, or [HTML Encoder/Decoder](/tools/html-encoder) for entity encoding.
FAQ
Will minification break my HTML?
No. The minifier only removes comments, extra whitespace, and line breaks. All tags, attributes, and content are preserved. The minified HTML renders identically to the original.
How much size can I save?
Typically 10–30% depending on how much whitespace and how many comments your HTML contains. Well-indented code with many comments saves more than already-compact HTML.
Should I minify in production?
Yes. Minification is a standard performance optimization. Combined with gzip/brotli compression, it significantly reduces page load times.