The free 3 W3C MarkUp Validation Service and 4 W3C CSS Validation Service ensure that your pages meet the exact specifications established by the W3C. The MarkUp Validation Service checks for ...
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Master HTML validation for cleaner, accessible code
HTML validation is more than catching missing tags—it’s about ensuring your site is standards-compliant, accessible, and optimized for performance. From W3C’s trusted Markup Validation Service to ...
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