It displays the main headings and subheadings of web pages through heading tags, which contain six levels of headings.
There are the following six levels of HTML headings:
<h1>: It is the Heading 1 tag. It is used for the title of the page only once.<h2>: It is the Heading 2 tag. It gives the major section headings of the page.<h3>: This is the Heading 3 tag. It shows the sub-sections of the page’s main headings.<h4>: This is the Heading 4 tag. It shows the sub-sections under Heading 3.<h5>and<h6>: These are the HTML tags for Heading 5 and Heading 6. They are used to show subheadings under the main headings on a webpage. These headings are fewer and appear smaller in size than the others.