Image SEO checker & optimizer.
Check a page for missing alt text and image markup issues. Generate AI alt text to review, edit filenames, compare compression and export lighter WebP or AVIF files.
AI alt text generator
Give the image a useful description.
Upload a photo or audit a page, add its context, and ask for an English alt text suggestion. Check the details, edit the wording, then include it in your export. Decorative images can keep an empty alt attribute.
5 descriptions to try with a free account. 200 each month with Pro.
Try the AI alt text generatorImage SEO tool questions
What does the image SEO checker check?
Enter a public page URL to review alt attributes, filenames, dimensions, loading and responsive-image markup. yaSEO reads up to 40 image elements from the page's HTML and attempts to measure the first 20 images. It does not render JavaScript, crawl the whole website or find every CSS background image.
Can yaSEO generate alt text with AI?
Yes. Sign in, upload an image or audit a page, then choose Suggest alt text for an image. Add page context if it helps explain the image's purpose. The AI generates an English suggestion for you to review. Choose Use this text to apply it, or discard it. You can edit the description before exporting; existing alt text is never replaced automatically.
How many AI alt text descriptions are included?
A free account includes 5 descriptions to try in total. Pro includes 200 descriptions per calendar month, including for existing lifetime members. The Pro allowance resets on the first day of each month at 00:00 UTC, and unused descriptions do not roll over. Manual alt text edits do not use AI credits.
Does every image need descriptive alt text?
No. An image that only decorates the page can use an empty alt attribute, written as alt="". Informative images need a text alternative that conveys their purpose in that page's context. Check the page before marking an image as decorative. The AI generator is disabled for images you mark as decorative.
How do I add the generated alt text to my website?
Review the descriptions, then choose your export destination. The WordPress package works with the free yaSEO importer to create Media Library images with alt text. HTML + apps includes responsive image files, ready markup and JSON. Image files + CSV provides a manual mapping for other systems. Alt text is an HTML attribute; it is not embedded into a WebP or AVIF file. Existing pages still need to be updated and checked when you publish.
Which image formats can I upload and export?
Upload non-animated JPEG, PNG, WebP or AVIF files, up to 8 MB and 24 megapixels each. A batch can contain up to 20 images. Export as WebP or AVIF with a maximum width between 100 and 2,400 pixels. Small images are not enlarged. Your plan determines how many files you can export in one batch.
Will image SEO optimization guarantee higher rankings?
No tool can guarantee rankings. Use yaSEO to find image issues, review descriptions and prepare lighter files, then publish the changes and audit the page again. Search visibility depends on the page and many other factors. An audit score or an AI suggestion is a starting point for review, not a promise of search results.