Does alternate text make images accessible?
No, alternate text does not make images accessible. Alternate text makes content that contains images comprehensible when images cannot be seen. What’s the difference? If alternate text makes images accessible, then reading the alternate text for an image on its own should sufficiently describe the image. This may work for some images but not for all. In the following example, simply reading the alternate text in isolation will not adequately describe the image: •
I 
you!
Instead, the real function of alternate text is to work with surrounding content to make that content comprehensible (and therefore accessible) when images cannot be seen.
