A search engines (SE) that gives the relevant information to a user for search query, this technique called as search engine optimization (SEO). The Search Engine Optimization is a process of webmaster or website user to make their website or webmaster improve ranking in the Search Engine result. If we known search engine optimization then it is useful to increase the availability of webmaster or website in Search engine result. In this paper focus on On page optimization & Off page optimization techniques as well as Page Rank Algorithm and SEO tools.