How to Edit Image Size in HTML on Tumblr. If your blog images are too large, users may have to scroll to see them. Make the images too small, and blog visitors might not notice them. Site ...

There are two easy ways to see if an image on a website has alt text. 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.

You will see a special HTML img tag that looks similar to the one in the text shown below: The image tag's code begins with a less-than symbol and ends with a greater-than symbol.