What is it?
Check if your webpage is using any H1 and H2 HTML header tags. Header tags are not visible to users, but help clarify and support the overall theme or purpose of your page to search engines. The H1 tag represents the most important heading, e.g., the title of the page or blog post. The H2 tag represents the second most important headings on the webpages, e.g., the subheadings.
