Image Optimisation Checker Example Report — Alt Text, WebP & Dimensions
This example shows the AIPageSEO Image Optimisation Checker for an e-commerce category page with 34 images. The report finds 8 missing alt texts, 12 JPEG/PNG images that could be WebP, 6 images without width/height causing CLS and estimates 340KB of potential savings.
| # | Image URL | Dimensions | Issue |
|---|---|---|---|
| 1 | /products/trainer-blue-800.jpg | 800×600 | ❌ No alt text |
| 2 | /products/trainer-red-800.jpg | 800×600 | ❌ No alt text |
| 3 | /banners/sale-banner.png | 1200×300 | ❌ No alt text |
| 4-8 | 5 more product images... | — | ❌ No alt text |
12 images served as JPEG/PNG — convert to WebP
Estimated saving: ~280KB (avg 23KB per image). All modern browsers support WebP. Use an image CDN or build step to serve WebP with JPEG fallback using <picture> element.
6 images missing width and height attributes
Browsers cannot reserve layout space for images without explicit dimensions, causing Cumulative Layout Shift when they load. Add width and height matching the actual display size to all img elements.
Hero image not preloaded (LCP element — 124KB)
The largest image on the page (124KB JPEG, 1200×800) is the LCP element but is not preloaded. Add <link rel="preload" as="image" href="/hero.jpg"> to reduce LCP by approximately 0.8–1.2 seconds.
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