What is a title tag?

1 min read Last updated: 14 Oct 2026

The title tag is the HTML element that defines a page’s title. Google usually shows it as the clickable headline in search results, and the browser shows it in the tab. In the source code it sits in the head section as <title>.

The title tag is one of the most important elements of on-page optimisation. It tells Google what the page is about and is often the first thing searchers see of you.

How does a good title tag work?

A title tag is not the same as the heading on the page (H1), even though the two are often similar. A good title follows these rules:

  • the main keyword as close to the start as possible
  • as a rule of thumb around 60 characters, because Google cuts off longer titles
  • a clear benefit that makes people want to click
  • a unique title for every page, no duplicates

Google sometimes rewrites titles itself, for example when they are too long or do not match the content. A precise title reduces that risk.

Why does the title tag matter?

The title works twice over: on rankings, because it names the topic of the page, and on the click-through rate, because it competes for attention in search results. For online shops, working on category titles pays off; for medical practices, the titles of treatment pages.

With ongoing SEO management, you test titles on pages with many impressions and few clicks – often the quickest lever for more visits and enquiries.