Checks if images are served in modern formats like WebP for better compression and quality.
This check verifies if you are using next-generation image formats like WebP or AVIF instead of older formats like JPEG and PNG.
Modern formats offer superior compression and quality, meaning your images will have smaller file sizes without sacrificing visual fidelity. This leads to faster page loads and less data consumption for users.
Not using modern image formats is a missed performance optimization. It results in slower page load times, which can negatively affect your SEO rankings and user experience.
Run a free audit to see how your site performs on Modern Image Formats and 159 other checks.
Start Free AuditChecks if images use responsive techniques like srcset.
Checks if images have width and height attributes to prevent layout shift.
Checks for JavaScript errors in the browser console. (Note: In-dev check)
Measures the total size of the HTML document.