Plagiarism checker refers to a computerized program that is implemented in detecting plagiarism by inserting text and matching it with already existing text. It is applied to identify duplicate or original content. Plagiarism checkers scan the content of databases, websites, and published materials and draw attention to possible matches. Students, educators, writers and publishers mostly use these tools to guarantee content originality. Although plagiarism checkers are beneficial in pointing to similarity, it is normal that human intervention is required to examine the situation and give due credit. They endorse writing morally and content integrity.