According to me, Page titles are one of the most important on page SEO factors on your site. Each of your pages & posts should have its own unique title, which includes the main keywords for that page.

A page title, or title tag, is the main text that describes a web page. It is the second-most important on-page SEO element (behind your main body content), is the easiest SEO element to edit and appears in three key places

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