HTML5 Banner Validator

Comprehensive quality checklist for HTML5 banner ads. Ensure your creative meets industry standards and performs optimally.

Quality Assured Industry Standards

Technical Validation Checklist

Core requirements for HTML5 banners

File size within limits - Banner should be under 150KB (compressed) Correct dimensions - Ad stays within specified pixel dimensions (no overflow) Click URL works - Clickthrough opens correct landing page in new tab No console errors - Browser console shows no JavaScript errors Fast load time - Banner loads in under 3 seconds SSL compatible - All assets load over HTTPS (no mixed content)

Performance Checklist

Optimize for speed and efficiency

CPU usage acceptable - Banner uses less than 10% CPU when idle Animation controlled - Animations stop after 30 seconds (IAB guideline) Images optimized - Images compressed without quality loss No memory leaks - Banner doesn't accumulate memory over time Responsive design - Banner adapts to container size gracefully

Browser Compatibility

Test across all major browsers

Chrome - Works correctly in latest Chrome Firefox - Works correctly in latest Firefox Safari - Works correctly in latest Safari Edge - Works correctly in latest Edge Mobile browsers - Tested on iOS Safari and Chrome Mobile

Best Practices

Quality and user experience

Clear call-to-action - CTA button is visible and clickable Readable text - Text is legible at banner size (no tiny fonts) Brand visible - Brand logo or name is clearly displayed No auto-audio - Sound only plays on user interaction Compliant with policies - Follows ad network and IAB policies

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Use our live preview tools to test your HTML5 banners in all standard sizes.

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