Does this validate my HTML?

This tool focuses on formatting; it doesn't check for HTML spec compliance or accessibility issues.

What are void elements?

Tags like , , and that never have closing tags or children — this formatter handles them correctly without over-indenting.

No hard limit — very large documents may just take a little longer.

Beautify and indent messy or minified HTML markup.

Private by default Instant results No signup

Processed locally

Your HTML never leaves your browser tab.

Void-element aware

Correctly handles tags like <br> and <img> that never nest.

Instant results

No server round-trip needed.

Format, validate and beautify JSON instantly.

Check JSON for syntax errors, with exact error location.

Format and indent XML documents.

Beautify and indent CSS stylesheets.