SEO glossary
What is an H1 Heading?
Learn what an H1 heading is, how it differs from the SEO title tag, and how to align H1s with titles for clearer on-page structure and search relevance.
Definition
An H1 heading is the primary HTML heading on a page (the h1 element) that introduces the main topic to readers and contributes structural context for accessibility and SEO.
H1 and titles work as a pair
The H1 orients readers on the page. The title tag orients them in tabs and SERPs. When they conflict, engines may rewrite the SERP title using the H1.
Crawlox reviews headings alongside titles so structural and SERP signals stay coherent after each crawl.
Related terms
Frequently asked questions
Should H1 match the title tag exactly?
They should align in meaning. Exact match is optional; clarity beats forced duplication.
How many H1s should a page have?
One clear primary H1 is the safest default for most marketing and content pages.
References
Explore authoritative guidance and frameworks related to h1 heading.
Explore every glossary definition
Return to the glossary to search by term, alias, starting letter, or category.