A tooltip is a piece of text that appears when you move your mouse over something in a program. As the name suggests, they were originally used for explaining what different tool icons represented ...

You can do the same without using an image-editing program once you understand how to use Tumblr's HTML editor. Adding an image to your Tumblr blog post is as simple as clicking the "Insert Image ...

You can turn on your own screen reader, or "Inspect" the page's HTML code to see what alt text has been assigned to the image. How to check if an image has alt text on a web page using a built-in ...