One advantage HTML has over desktop applications is that we can search for functionality.

Rather than hunt for the ability to obtain the current page in printable form, why not search for the word “print”?

The BBC understands:

…as does ABC News:

Amazon.com however, has room to grow:

It’s possible to overlay text on to an image to give the appearance of a button while retaining searchability. There are other reasons as well, most notably that graphical text doesn’t resize for vision impaired users.