Our HTML Validator is a comprehensive tool that checks HTML markup against W3C standards while also analyzing accessibility, SEO, and performance aspects. Perfect for web developers, designers, and content creators who need to ensure their HTML code meets modern web standards.
Beyond basic syntax validation, our tool provides insights into accessibility compliance, SEO optimization opportunities, and performance improvements to help you create better, more inclusive, and faster-loading web pages.
Key Validation Features:
- W3C Standards: Full HTML5 and W3C markup validation
- Accessibility: WCAG 2.1 compliance checking and recommendations
- SEO Analysis: Meta tags, heading structure, and search optimization
- Performance: Identify performance bottlenecks and optimization opportunities
- Syntax Checking: Detect unclosed tags, invalid nesting, and markup errors
- Attribute Validation: Verify HTML attributes and their values
- Error Categorization: Organized error reporting by severity and type
Common Use Cases:
- Web development quality assurance and testing
- Accessibility compliance verification for inclusive design
- SEO optimization and search engine ranking improvement
- Code review and peer validation processes
- Educational purposes for learning web standards
- Client deliverable quality control
- Legacy code modernization and cleanup