HTML Formatter & Beautifier

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Format, beautify, or minify HTML code with proper indentation and syntax highlighting.Updated 2026-03-16

Welcome

This is a sample HTML page for formatting.

  • Item 1
  • Item 2
  • Item 3

Form

How to Use

  1. Select formatting options
  2. Copy the formatted result
  3. Check validation messages for issues
  4. Review output with syntax highlighting

FAQ

Does it support large files?

Handles reasonably large inputs. Files over 10MB may take a few seconds depending on your device.

Which standards does it follow?

Follows the latest official specifications — RFC, W3C, or ECMA as applicable.

Is the output production-ready?

Yes, generates clean, standards-compliant output suitable for production use.

Does it validate input?

Yes, input is validated and clear error messages are shown for any issues.

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'; formatHTML(); } let autoTimer; function autoFormat(){ clearTimeout(autoTimer); autoTimer=setTimeout(()=>{ if(document.getElementById('input').value.trim())formatHTML(); },500); } // Keyboard shortcuts document.addEventListener('keydown',function(e){ if((e.ctrlKey||e.metaKey)&&e.key==='Enter'){e.preventDefault();formatHTML();} if((e.ctrlKey||e.metaKey)&&e.shiftKey&&e.key==='C'){e.preventDefault();var o=document.getElementById('output');if(o.value)navigator.clipboard.writeText(o.value);} });