Definition of the H1 Tag

The “H1 Tag” is the main title tag for a webpage in html code.

Usage of the H1 Tag

Usage:

The H1 Tag in action

H1 Tag - relevance for SEO

For most search engines, an H1 Tag applied to a phrase or word on a webpage enhances the importance of it, as well as the relevance of the webpage for that word as a keyword. So from an SEO point of view, it is recommended to apply an H1 Tag to the main title of the webpage and include relevant keywords in it.