Rocket Validator looks for accesibility violations on your pages using the axe-core accessibility engine, hosted on our own servers and integrated into our web crawler. You don't need to buy an additional license, everything's already included in your Pro account at Rocket Validator.
WCAG: Best Practice: Page must contain a level-one heading
Ensures that the page, or at least one of its frames, contains an
h1element that appears before the start of the main content to allow screen reader users to use keyboard shortcuts to navigate the heading structure instead of wasting time listening to more of the web page to understand its structure.
Screen reader users can use keyboard shortcuts to navigate directly to the first
h1, which, in principle, should allow them to jump directly to the main content of the web page. If there is no
h1, or if the
h1appears somewhere other than at the start of the main content, screen reader users must listen to more of the web page to understand its structure, wasting valuable time.
Keep in mind that blind users can't just look at a web page and immediately understand its layout the way that a visual user can. Visual users can take in much information about the page layout without having to read all of the content. Blind users don't have that luxury. Screen readers read linearly, which means listening to the entire web page unless there is some other convenient way to get a "glimpse" of the page's layout and structure. It turns out that headings are a way to do that. Screen reader users can use keyboard shortcuts to navigate through the heading structure of a document.