Heading tags are part of the HTML coding for a Web page. Headings are defined with H1 to H6 tags. The H1 tag defines the most important heading on the page (usually the largest or boldest, too), whereas H6 indicates the lowest-level heading.
Heading tags are indicators used in HTML to help structure your webpage from an SEO point of view, as well as helping Google to read your piece of content. Heading tags range from H1-H6 and form a hierarchical structure to your page. Heading tag 1 is the most important header in Google’s eyes and forms the title of the page. Identifying the title with an H1 tag will help Google quickly know what the content is about.
Headings are defined with the <h1> to <h6> tags.
⦁ <h1> defines the most important heading.
⦁ <h6> defines the least important heading.
Search engines use the headings to index the structure and content of your web pages
The most important heading tag is the h1 tag and least important is the h6 tag. In HTML coding, the heading tags from h1 to h6 form a top-down hierarchy. This means that if you skip any of the tag numbers the heading structure will be broken, which is not ideal for on-page SEO.