Use Headings to help organize content, making it easier for everyone to read. Heading 1 is usually a page title or a main content heading. Heading 2 is usually a major section heading. Heading 3 is usually a sub-section of the Heading 2. Heading 4 through 6 are sub-sections of the previous Heading. Also use Accessible Rich Internet Applications (ARIA) to elements to communicate document structure.
When applying hyperlinks, use meaningful or descriptive text, not a URL, and avoid terms like “click here.” It helps all users navigate more efficiently, especially screen reader users. In addition, use underlined text with a color different from the surrounding text.
Apply effective alternative (alt) text to all images, shapes, pictures, charts, tables, and SmartArt graphics. It will help describe a visual element for those who cannot see it. Since screen-reading software identifies an image, it is not necessary to add “picture of” or “image of.”
Wherever possible, avoid using tables since following the table content through a screen reader can be difficult. If a table is used, make it as simple as possible and use a heading to introduce the table.
The Web site interface should have sufficient contrast between text color and background color.
Forms fields should have appropriately coded labels and prompts.
If sound or video is in a document, make sure to add closed captions or subtitles to your document.
Use available accessibility tools such as the WAVE Web Accessibility Tool.
Ensure that all menus, links, buttons, and any action with a mouse is accessible with a keyboard.
Test the reading order of a Web page so that it is understandable to a user. Screen readers read tables from left to right, top to bottom, one cell at a time
Eliminate or limit blinking and/or flashing content to 3 seconds because it may be distracting and cause seizures to occur in people with a photosensitive disorder..
Create and design Web sites according to the WCAG 2 standards and guidelines.
Audio and videos must have accompanying captions or transcripts.
Ensure that media players: support closed captions, support audio description to enable users to toggle the narration on and off, are operational without a mouse, have buttons and controls properly labeled, and have accessibility features.