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Image SEO checker
Images bring traffic from Google Images and are also the elements that affect page speed the most. Let’s check the images on your page one by one.
Image optimization checklist
- Every meaningful image should have alt text describing its content; empty alt text is fine for decorative images
- Photos should be under 200 KB; WebP or AVIF usually makes them 30–50% smaller
- Width and height values keep the page from shifting while it loads (CLS)
- Use lazy loading for images below the fold, but not for the first image
- Use srcset to serve smaller images to mobile devices
Frequently asked questions
How should I write alt text?
Describe what’s in the image in a short, natural sentence. Use the keyword only if it’s genuinely relevant to the image; avoid keyword stuffing.
Does WebP work in all browsers?
Yes, all current browsers support WebP. AVIF produces even smaller files and is supported by most modern browsers.
How many images are checked?
All images on the page are listed; the file size and type of the first 40 unique images are read from the server.
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See where your site stands in 20 seconds.
Find your technical issues and AI visibility gaps with a free analysis, then leave the fixing to AutoAiSeo.
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