That's the thing, though. Tooltips aren't just text. Qt, GTK, and Windows all support some flavor of rich text tooltips, so it's not even an operating system co

That's the thing, though. Tooltips aren't just text. Qt, GTK, and Windows all support some flavor of rich text tooltips, so it's not even an operating system constraint. The simplest solution for this in an accessible way looks exactly like Aria labels. But here's the thing: a text tooltip assumes the label you show to screen readers is the tooltip. That's not always true. In this case, the tooltip serves the purpose of labeling a button icon. A tooltip on a text button doesn't have the same purpose from an accessibility standpoint. There's simply no universal way to define what a tooltip is in a way that semantically correct.