On-Page SEO improves the information and page-level signals people and search systems use to understand an individual URL. It connects search intent with the appropriate page, organizes the content, clarifies its topic and creates useful paths to related information.
The work can include keyword and topic mapping, titles, meta descriptions, heading hierarchy, content, internal links, images, URLs and conversion context. It complements content marketing when new or substantially rewritten pages are needed.
The goal is not to insert more keywords. The goal is to make each important page clear, useful, relevant and properly connected to the rest of the website.