H1 and header tags are snippets of code that tell your browser how to display content.
The H1 tag should describe your content for the reader. H1s are usually the most visually notable content on the page.
The H1 is what the user will notice most on the page. An H1 drives SEO when it has been optimized for user intent. In other words, when you give users what they are searching for in your H1, Google rewards you.
80% of page one results on Google use an H1 tag.
Header tags make your content easier to read and drive SEO when designed with keywords.