Web and technology
H1
Abbreviation for Heading 1
In short and in plain language
H1 is the main heading of a web page.
In the code of the page, it is the top level of heading.
It shows visitors what the page is about. It does the same for programs that read pages aloud and for search engines.
It can affect how search engines see the topic of a page.
Definition
H1 refers to the main heading of a web page, marked up in the HTML code as the top heading level. It tells visitors, screen readers and search engines what the page is about. It can influence how search engines interpret the topic of a page.