TYPO3 Core

The ViewHelper f:core.icon https://docs.typo3.org/other/typo3/view-helper-reference/master/en-us/typo3/core/latest/Icon.html
outputs <img> tags without any alt=. At the minimum it should output alt="" as screenreaders would else read the image filename.

Giving the possiblity to set the alt= would be even better.

Use case would be the search results of indexed_search for example. Giving an alt="zip file" would be beneficial there.