Accessibility checkers scan and evaluate digital materials for accessibility compliance. They help to identify a range of accessibility barriers and offer solutions for addressing them.
Alt text is a text-based representation of non-text content that is read by screen-reader software so that people with visual or cognitive disabilities can access and understand the non-text content.
Accessible hyperlinks allow individuals that use screen readers to quickly identify where the hyperlink will take the individual without having to rely on the surrounding text.
Users, including users with visual disabilities, must be able to perceive content on the page. Color cannot be used as the only visual means of conveying information.