HostLookup

HTML Validator

Validate HTML code using W3C standards

About HTML Validator

The HTML Validator checks your HTML code against W3C (World Wide Web Consortium) standards to ensure it follows best practices and is error-free.

Why Validate HTML?
  • Cross-browser Compatibility: Valid HTML works consistently across different browsers
  • Better SEO: Search engines prefer well-structured, valid HTML
  • Accessibility: Valid HTML improves accessibility for users with disabilities
  • Faster Loading: Clean, valid HTML loads and renders faster
  • Easier Maintenance: Valid code is easier to debug and maintain
Common HTML Errors:
  • Missing DOCTYPE declaration
  • Unclosed or improperly nested tags
  • Duplicate IDs
  • Missing required attributes (like alt for images)
  • Using deprecated tags or attributes
  • Incorrect character encoding