What is on-page SEO?

The most important thing to understand about on-page SEO is that it's not just about creating content and then publishing it, but rather understanding how Google crawls pages and evaluating their quality as well as relevance for specific search queries. This means looking at things like internal linking structure, keyword density (the number of keywords per article), speed index (how quickly your website loads), core vitals (how the page loads for users), and many other factors outside what you might think of when writing or designing webpages.