QuickFreeTools

Online HTML Code Check

Check HTML for unclosed or mismatched tags. Basic validation of tag structure.

Frequently Asked Questions

What does it check?
It looks for opening/closing tag balance: every <tag> should have a matching </tag> in the right order.
Does it validate attributes or CSS?
No. Only tag names and nesting are checked; attributes and content are not validated.
What about self-closing tags?
Tags like <br>, <img>, <input>, <meta> are treated as self-closing and don't require a closing tag.

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