The belief here is that the keywords you use in H2-H6 subheadings are more heavily weighted in Google’s algorithm than words in plain text and that tags are therefore a ranking factor of their own.

Martin Splitt from Google seemed almost upset by advice he saw someone was given around how to use HTML headings or Hx tags on a page. An SEO was told to use H3 tags for level-2 subheading. So what ...

Google’s John Mueller discussed heading elements with a member of the SEO community where he affirmed the usefulness of using hierarchical structure when using heading elements. “h1–h6 elements have a ...