Alt text
Alt text is a written description of an image, held in the page's code for people who cannot see the image and for machines that cannot interpret it.
In a little more detail
It is an accessibility requirement first. That it also tells a machine what a picture contains is a genuine benefit and the wrong reason to do it.
Related terms
- Structured data: Structured data is information written into a page in a fixed format that states plainly what the page is: that this is a product, that this is its price, that this is the business selling it.
See it on your own site
The scan reads your site the way AI search does and reports where you stand on this and sixteen other checks.