The title tag is the headline Google shows as the blue link in search results, and the browser shows on the tab. It is the first thing a person sees and one of the strongest signals to the search engine about what the page is about.
The title is your storefront sign in search. A person decides whether to click based on it, and Google reads it to understand the page's topic. A weak or empty title drags down both click-through and rankings at once - a rare case where one line affects everything.
Aim for 50-60 characters so it is not cut off. Put the main keyword near the start and the brand at the end. Give every page its own unique title: if ten pages share one, Google cannot tell them apart and may show the wrong one.
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