Free Image Optimisation Checker
Enter a URL to find oversized images (>100kb) and images missing alt text — two of the most common performance and accessibility issues.
How it works
This tool checks every image on your page for two common issues: images larger than 100kb that could be compressed or converted to modern formats (WebP, AVIF), and images missing alt text — a critical accessibility and SEO requirement.
Large images are one of the biggest causes of slow page loads. Missing alt text means screen readers can't describe the image to visually impaired users, and search engines lose valuable context about your content.