The Plagiarism Checker X tool was designed to help you figure out if the text you have in your possession has been plagiarized. You enter the text from your document into the Plagiarism Checker X tool and it searches the web for the same type of text. It then tells you if the text you have in your possession is also on the Internet. You can tell if the text you have is also published online. If you have received a text document from another person, then you may see if that person has copied the text from somewhere on the Internet.