Abstract: As the use of Web is increasing more day by day, the web users get easily lost in the web’s rich hyper structure. The main aim of the owner of the website is to provide the relevant information to the users to fulfill their needs. Web mining technique is used to categorize users and pages by analyzing users behavior, the content of pages and order of URLs accessed. Web Structure Mining plays an important role in this approach. In this paper we discuss and compare the commonly used algorithms i.e. PageRank, Weighted PageRank and HITS.