Headings
Headings in a document or web page make a page look well-organized, give an at-a-glance view of the topics covered, help people navigate to various sections easily, and can auto-generate a table of contents for you. If you create your headings by enlarging the font, changing the font style and color, the text is still tagged in the app as “Normal” text. This is a “faux” heading. It looks like a heading, but doesn’t act like a heading.
Using the one-click formatting options for Headings from your app’s toolbar, tags the text as a Heading. (You read correctly. One-click!) This allows assistive technologies to read only the Headings on a page, allowing users to also benefit from that “at-a-glance” view of the topics and the ability to quickly navigate to the section they need. Otherwise, they would need to read the document in full until they get to the needed section. And don’t forget, if the Heading isn’t tagged correctly, Word and Google Docs can’t auto-generate that Table of Contents for you!
Check out Why use Accessible Headings for a demo!