On-page SEO is important because it tells Google all about your website and how you provide value to visitors and customers. It helps your site be optimized for both human eyes and search engine bots. Merely creating and publishing your website isn't enough — you must optimize it for Google and other search engines in order to rank and attract new traffic. On-page SEO is called "on-page" because the tweaks and changes you make to optimize your website can be seen by visitors on your page (whereas off-page and technical SEO elements aren't always visible). Every part of on-page SEO is completely up to you; that's why it's critical that you do it correctly. Now, let's discuss the elements of on-page SEO.