Simplistically, on-page optimization ensures that search engines comprehend a page’s topic and keywords, and then match it to relevant searches. How’s your Keyword Optimisation? Can Google easily understand what keywords you want to rank a page for? How’s your page title, URL, H1 tag, Content? How are the meta titles and meta descriptions? Have you inserted image file names, ALT tags and anchor texts correctly? Did you add Schema Markup? How about non-keyword related on-page SEO factors? Onpage Optimisation is the basic process of SEO, but one that is extremely essential from the perspective of Google indexing.