I was looking at a site last night. Ok, I looked at a lot of sites yesterday, but had a specific look at one. They had done the “right” thing and declared an alt attribute to some images. But giving the site a whirl with images turned off, anyone could quickly see that their choice of alt text was not particularly helpful.
Many accessibility experts rant and rave against automated accessibility testing tools. They claim that these tools are useless. They further claim that the criterion are too complex to evaluate properly without human judgement. They are not wrong. But we should be careful not to throw out the baby with the bathwater. They can be beneficial as a quick indicator that something’s not right.