A title tag is an HTML element that specifies a page's title. The clickable headline shows up on search engine results pages (SERPs) for a given result. It is essential for usability, SEO, and social sharing.
The title tag should give a clear and brief summary of what a page is about. Google usually only shows a title tag's first 50–60 characters. If your title has more than this number of characters, Google will display an ellipsis ("...") to show that the title has been cut off.
Like meta descriptions, Google's search algorithm does not directly use title tags to determine where a page ranks. But they can affect click-through rates, user engagement, and the way relevance is seen, which can affect your search ranking in a roundabout way.
To make a reasonable title tag, you should: