Page Title

The <title> element: your page’s headline in search results and often its name when an AI assistant cites it.

More than one page title: The page’s head holds two or more title elements, so the title search engines use may not be the one you edited.
Page title identical to the H1: The page title and the main heading use exactly the same words, so the page spends two chances to describe itself on one phrase.
Page title missing or empty: The page has no title in its head, or the title is empty, so search results and browser tabs have no name you chose for it.
Page title outside the head: A title element sits in the page body, usually because a stray element closed the head early and pushed the title and other metadata out.
Page title over 561 pixels wide: The page title is estimated to be wider than 561 pixels, so a search result is likely to show only its first part.
Page title over 60 characters: The page title runs past 60 characters, so search results are likely to cut it off before the reader reaches the end.
Page title under 30 characters: The page title is shorter than 30 characters, which leaves room unused to say what the page offers and who it is for.