Written by Sherlock Holmes
Heading tags are perhaps the most important element you can use when it comes to search engine optimization. These SEO terms – H1 through H6 in the source code – tell search robots what is most important on your pages. In addition, these elements, when styled with a little CSS, can also make your website easier for people to read. (Using H1 through H6, make each headline or subheadline look the same way).
Headers/heads are ranked in priority from H1 (highest) to H6 (lowest). Most Web sites use H1 for page titles, H2 for subheadlines throughout the copy, and H3 for smaller headers (such as list names or other information). H4 through H6 are used less frequently.