What is Key aspects of Heading tag..?

When you're structuring the HTML coding for a Web page, it can look a little like an outline, with main headings and subheadings. For best SEO results, it is important to place keywords in those headings, within Heading tags. 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. You want to avoid thinking of headings as simply formatting for your pages: Headings carry a lot of weight with the search engines because they're for categorization, not cosmetics. You can control what each heading looks like consistently through your site using a CSS style sheet that specifies the font, size, color, and other attributes for each Heading tag.

H1 tag defines the title or main heading of a webpage and therefore there should be only one H1 tag on a webpage. This helps browsers and robots to identify your webpage content.