A web site parcer tool is a program that will allow you to gather information from many web sites and web pages throughout the Internet. The tool goes through the targeted sites and is able to grab large amounts of data, through the parameters that you have created. This data can be used in XLS, CSV, XML, and TSV files for later use. Being able to gather huge amounts of information quickly and easily is an invaluable tool for any business owner or retail site. The uses of this information are endless and especially since now it can be done so efficiently.