SEO on-page refers to the practice of optimizing individual web pages to improve their search engine ranking and visibility. This includes optimizing the content, HTML code, and structure of a page to make it more relevant and user-friendly for both search engines and human visitors. On-page SEO techniques involve keyword research, meta tags, internal linking, and other strategies to ensure that a webpage is easily discoverable and provides a positive user experience. By implementing effective on-page SEO, websites can attract more organic traffic and ultimately increase their online presence and conversions.