When a graphic is distributed as an image (ie. formats like JPEG, PDF, PNG) any text that is part of the graphic becomes hidden from assistive technology and also may shrink to an unreadable size on smaller screens.
Checking that a page can be navigated without a mouse is one of the easiest accessibility tests you can do. It ensures that people who need to – or prefer to – navigate the web with their keyboard can get to the functionalities they need.
We like the WebAIM color contrast checker because it includes an eyedropper tool that lets you sample colors from a graphic or image before you upload it to the web.
A group of more than two related items is presented in paragraph form, separated by commas or is presented as a list but not marked up (coded) as a list.