The H1 tag is the equivalent of a printed table of contents in the text (this is like the title of a book or the title of an article in a printed magazine). Each page implies one and only one H1 level header.
A bit of history
At the dawn of the development of the Internet, when cascading style sheets (CSS) had not yet been invented, the H1 level tag contained the text that was the largest to display on the page, so initially attention was most attracted to it . As a rule, there were no more than one, two lines of text that immediately made it clear to the main topic on the page. Search engines from the very first algorithms took into account this feature in the compilation of the index .
Technologies have evolved, there are ways to change the style of any components for any design and typography, but the importance of the first H1 headline remains the same. From the point of view of attractiveness for the user, the technical level of nesting and the size of the header has become of secondary importance. But for SEO promotion, this title tag continues to carry a lot of weight . It is important to take for granted the fact that H1 and Title are different headings that have common keywords . And they need to skillfully combine with each other.
Neglecting the rules of uniqueness and compliance of headings can lead to unpleasant consequences for the site - getting into the filters of search engines and departure from the index. At the moment, the algorithms of all search engines give priority to the quality of content and its SEO-optimization . Duplication, violation of the hierarchy and inconsistency with the content is punishable by applying filters to the site.
Optimum H1 Length
The heading of the first level is recommended to be made shorter than the Title, but if it turns out longer, the catastrophe will not happen. The most important thing is the right combination of key requests . They should not be repeated, but should not be contradictory to each other.
H1 Writing Final Checklist
► Use the H1 heading only one time per page.
► H1 - the very first title in the content.
► Place the heading as high as possible to the top of the page.
► Title H1 must not match Title one to one
► Use key queries in H1 text
► H1 contains only text , without nested tags
► Minimum punctuation marks , exceptions "!" And "?" At the end
► The optimal length of 30 - 60 charactersCheck page