H1 Tag
The page’s main heading. One per page, describing the page — distinct from the title tag.
The h1 is a page's main heading and should describe what the page is about in one line. Use exactly one per page: it establishes the top of the document outline that screen readers navigate by, and it is a strong hint to search engines about the page's subject. Style it however you like — the tag matters, the size does not.
Definition
The <h1> is the main heading of a page — the one that names what the page is about. HTML5 permits several per document inside sectioning elements, but for search and for screen-reader navigation, one per page is the practice that holds up.
The H1 is not the title tag. The title tag is what appears in search results and the browser tab; the H1 is what a visitor reads first on the page. They should agree in meaning without being identical: the title can carry the brand and the search phrasing, the H1 can be the human sentence.
Why It Matters
The H1 is one of the strongest on-page signals about topic, and it is the first landmark a screen-reader user jumps to. A page with no H1, or with the logo marked up as the H1, gives both a search engine and an assistive technology nothing to anchor on.
It also matters for extraction: AI systems summarising a page lean on the heading structure to decide what the page claims to be.
Example
On a pricing page, the title tag might be Pricing — Free, Pro $9, Agency $29 | SlapMyWeb while the H1 reads Simple pricing that scales with your audits. Same subject, different jobs. What to avoid: no H1 at all, an H1 that just says the brand name, or several H1s competing to define the page.
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