"Viewing" Inaccessible Content
Imagine you have an event coming up. It's going to be fun. You want everyone to attend, so you want to post it on your website. This is a big event so you already had flyers designed and printed. The flyer has all of the information you want to include and the design is lovely. You convert it to an image and when you make the web page you add the image of the flyer. The computer asks you for something called "alt text" but you don't know what that mean so you leave it blank and publish the page. With the image of the flyer your page has all the information you wish to convey.
Mary has attended your events in the past and hears there's a new event on your calendar, so she navigates to the page, hoping to find out more. But she does not. The page is blank. Mary is blind. In order to use a web site she needs a special program called a screen reader, that converts the text on the page into speech and allows her to navigate the page with the keyboard.
For Mary, the page is blank because the screen reader cannot read the text in the image. The "alt text" you left blank is the alternative text to describe the image to screen readers. Mary will never know about your event. And may never return to your website. This is actually a fairly common error but there are solutions. We can offer you training in making sure your content is available to people like Mary.