On-page SEO is one of the most commonly used SEO techniques. It focuses on optimizing an individual webpage rather than the entire website. It aims to rank the web page higher and generate more organic traffic in relevant searches. On-page SEO works on both the contents and HTML coding that can be optimized and be used to improve the rankings on the SERP. It includes relevant and regular publishing, high-quality content, headlines, images, besides HTML tags.
In on-page SEO, one works on the parts of the website that is within his/her control.