SEO - Headings

Set h1 headings

Each page should have a descriptive h1 heading to help search engines and users understand what that page contains. Headings can be added to web pages to give structure to the content in the same way headings are used in books and articles. The most important and highest ranking heading in HTML is called the h1 heading. The h1 heading is like the title heading of an article and similarly should give an accurate and concise description of the entire document to help guide readers. The keywords used in page headings are also treated as a ranking signal by search engines.

Use one h1 heading per page

Use only one h1 heading on each page to clearly indicate to users and search engines what the topic of the page is. Multiple h1 headings make it difficult for readers to know which heading is supposed to be the one that gives a top-level description of the whole document. You should then re-organize your other headings using h2, h3, h4, h5 or h6 subheadings to give an accurate headings hierarchy to your document.

Use optimal length h1 headings

Each page should have an h1 heading that isn’t excessively long to make it easier for users and search engines to understand the topic of the page. Google specifically recommends avoiding overly long headings so readers can scan your content more easily. Make h1 headings no longer than 70 characters.

Use unique h1 headings

Each page should have an h1 heading that is unique between all other pages on the site to avoid duplicate content issues. Each indexable page on a site should have unique content and each indexable page should have an h1 heading that accurately describes the topic of that page. Duplicate h1 headings can indicate duplicate content issues and as h1 headings can influence search rankings duplicate headings are a lost opportunity to signal the topic of your pages to search engines.

More Information:

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/Heading_Elements