HTML Minifier & Beautifier Online Free
Minify or beautify HTML online free. Removes whitespace and comments. Browser-based, no signup.
🔒 Your file never leaves your browser. All processing runs locally.
How to Minify HTML Online
- 1
Paste your HTML
Paste or type your HTML document or snippet into the input box.
- 2
Click Minify or Beautify
Minify collapses whitespace and removes comments. Beautify formats with consistent indentation.
- 3
Copy the result
Click Copy to copy the output to your clipboard.
HTML is the first byte the browser receives, and nothing else — no CSS, no JavaScript, no images — can even start downloading until enough of it has arrived to discover those resources. Trimming the document that everything else waits on is small but pure win: 10–30% size reduction with zero risk to functionality, since the parser ignores the removed whitespace anyway.
Where minified HTML matters most: email templates (some clients cap message size and clip anything beyond it), server-rendered pages that are generated per request, embedded widgets served millions of times, and static sites where every page ships its full markup. Hand-written HTML with generous indentation benefits far more than framework output, which is often already compact.
The whitespace caveat: HTML has two elements where whitespace is content, not formatting — <pre> and <textarea>. This minifier collapses spaces between tags globally, so if your document relies on preformatted blocks, check them in the output before shipping.
Round-tripping: Beautify mode re-indents minified or messy markup — useful when inspecting a page you scraped or inherited. If your document contains inline styles and scripts, run those through the CSS minifier and JS minifier separately for the full saving.