Now-a-days, the web is rich of any kind of information. And this information is freely available thanks to the hypermedia information systems and the Internet. This information greatly influenced their lives, their lifestyle and way of thinking. A web search engine is a complex multi-level system that helps them to search the information that available on the Internet. A web crawler is one of the most important parts of the search engine. It’s a robot that systematically browses and indexes the World Wide Web. A focused web crawler is used crawling only web pages that are relevant to the user given topic or web page link.