OriginalityCheck^®

Like everything else in today's digital culture, plagiarism is moving online. Turnitin's OriginalityCheck helps instructors check students' work for improper citation or potential plagiarism by comparing it against the world's most accurate text comparison database.

See the Original Work

Turnitin preserves the original format of the paper allowing instructors to view the student's original text, formatting, imagery and layout.

Understand What is Original and What Isn't

Turnitin shows how much of the student's paper matches content from our databases so instructors can quickly understand how much of the paper is unoriginal.

View Student's Sources

Matched sources from the paper appear in an easy-to-understand format revealing color-coded sources corresponding to non-original work.

Change OriginalityCheck to Meet Your Needs

Control what information appears in your originality report by filtering out bibliographic, quoted or small match sizes.

Access The Largest Database

Our database contains 24+ billion web pages, 300+ million student papers and millions of articles. Learn more about our content database.

View One Comprehensive Report

Instructors can easily move between or overlay OriginalityCheck, GradeMark and PeerMark reports to gain a full understanding of the written work.

24/7 Access from a Web Browser

Turnitin is completely online and available anytime through a standard web browser.

Content

For more than a decade, Turnitin has been refining the process of comparing papers to a vast repository of data to deliver originality reports in just a few seconds.

Content Comparison

The Turnitin Web Crawler scans and indexes new and existing content from the Web in the Turnitin database.

A student uploads a paper to Turnitin.com

The paper is compared to millions of books/publications; over 24 billion web pages; and 300 million student papers.

Results are returned in seconds, showing matches of the student paper to content from the Turnitin database.

Content Databases

When a paper is submitted to Turnitin, it is compared against three vast databases of content from three primary sources:

The Current and Archived Web: Similar to Google and Bing, Turnitin has built a web crawler that crawls the Internet and indexes content into a searchable form. Turnitin currently contains over 24 billion web pages from the current web as well as archived web pages.

Student Papers: Over 50 percent of plagiarism comes from other student’s work. Turnitin compares submitted papers to a database of over 300 million papers in the Turnitin paper database. Each day, the Turnitin student database grows by 190,000 papers.

Content Partnerships: Turnitin has partnered with leading content publishers, including library databases, text-book publishers, digital reference collections, subscription-based publications, homework helper sites and books. These partnerships have contributed over 110 million additional articles to our databases.