H1 heading tags belong to the HTML tags. They are used as the main heading on every URL. In general, the heading structure follows a clear hierarchy. The H1 heading tags are distinguished as follows #h1Here is the most important heading#!h1
In terms of SEO, the H1 heading is an essential element to provide search engines with information about the content of a page. Therefore, the H1 heading must be keyword-optimized and correspond with the content of the following text. Only then can the web crawlers better understand the content of the page and index it accordingly.
An H1 heading may only be used once per URL and may not be repeated within the domain. At the same time, H1 heading tags are mandatory; no URL without an H1 heading! A keyword-optimized H1 heading improves the ranking for relevant search queries.