HTML Formatter
Format and beautify messy HTML with proper indentation. Free online HTML formatter that runs entirely in your browser — nothing is uploaded.
Ctrl+Enter to run · Ctrl+K to switch tools · Recent button shows input history
Let AI do the hard part. Fix broken HTML, convert to email-safe HTML, or clean up any markup in one click — 3 free AI runs per day, no account needed.
Try the AI HTML FixerFAQ
Is my HTML uploaded to a server?
No. Formatting happens entirely in your browser with JavaScript. Your code never leaves your machine.
Does it support large files?
Yes — it comfortably handles documents in the megabyte range.