Free Developer Tool
HTML Nesting Validator
Detect invalid HTML element nesting.
What is HTML Nesting Validator?
Validate HTML element nesting to identify improperly nested tags and structural issues.
How to use
- Paste HTML.
- Run the validation.
- Review detected problems.
- Fix the structure.
Features
- Nesting validation
- Structure analysis
- Invalid hierarchy detection
- Browser processing
Common Use Cases
- HTML debugging
- Template validation
- Website development
- Markup cleanup
Example
Input
<p><div>Hello</div></p>
Output
Invalid nesting: <div> cannot appear inside <p>.
FAQ
Does it fix HTML automatically?
No.
Does it detect invalid nesting?
Yes.
Is processing local?
Yes.
Missing a feature?
If this tool doesn't cover your use case or is missing functionality, please let me know through the Contact page.
New improvements and features are added based on user feedback.