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🔍 HTML Validator

Validate HTML markup for syntax errors, compliance, and best practices

Enter the URL of the page you want to validate
Paste your HTML code to validate

About HTML Validation

HTML validation ensures your markup follows web standards and best practices. This tool checks for:

  • Syntax Errors: Malformed tags, missing closing tags, invalid nesting
  • DOCTYPE Declaration: Proper document type specification
  • Semantic Structure: Proper use of HTML5 semantic elements
  • Accessibility: Missing alt attributes, heading hierarchy
  • SEO Elements: Title tags, meta descriptions, lang attributes
  • Best Practices: Deprecated elements, inline styles

Why Validate HTML?

  • Better search engine crawling and indexing
  • Improved accessibility for screen readers
  • Consistent display across different browsers
  • Easier maintenance and debugging
  • Better performance and loading speed