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Ithenticate at Caltech: Further Information

iThenticate Services and Characteristics


  • Upload of popular document formats
  • Similarity check of text against large database of documents (published and unpublished)
  • Similarity index provides overall percentage of similarity with known sources
  • Similarity report provides view of individual sources with similar text
  • Filtering features allow removal of sources by word count, percent of similarity, source URL
  • Analysis filters limit similarity checking by section of document, word count, percent of similarity



  • Allows for collaboration
  • Compares manuscripts against its database of over 60 billion web pages and 155 million content items, including 49 million works from 800 scholarly publisher participants
  • Does not store a copy in a database

Readings about iThenticate

  • Butler, Declan. “Journals Step up Plagiarism Policing.” Nature 466, no. 7303 (July 8, 2010): 167–167.
  • Carney, P. Scott, and Samuel T. Thurman. “Self-Plagiarism and Conference Papers: Editorial.” Journal of the Optical Society of America A 35, no. 10 (October 1, 2018): ED4.
  • Crossref. “CrossCheck Plagiarism Screening.” Business, 23:03:56 UTC.
  • “Crossref Similarity Check Powered by IThenticate.” Accessed December 10, 2017.
  • “FAQs | Plagiarism Software.” Accessed December 10, 2017.
  • Horbach, S. P. J. M. (Serge), and W. (Willem) Halffman. “The Extent and Causes of Academic Text Recycling or ‘Self-Plagiarism.’” Research Policy, Academic Misconduct, Misrepresentation, and Gaming, 48, no. 2 (March 1, 2019): 492–502.
  • “IBWC Treaties.” Accessed August 26, 2019.
  • “IThenticate Study ID’s 10 Plagiarism Formats Worthy of Attention.” ASBPE, October 15, 2013.
  • “IThenticate User Guide.”, May 4, 2016.
  • Lee, Jang Hyun. “Analysis of CrossCheck Data on Two Years’ Worth of Papers Submitted to Archives of Plastic Surgery.” Archives of Plastic Surgery 41, no. 5 (September 2014): 449–51.
  • Lee, Won. “CrossCheck Data of Manuscripts Submitted to Journal of the Korean Association of Oral and Maxillofacial Surgeons.” Journal of the Korean Association of Oral and Maxillofacial Surgeons 41, no. 3 (2015): 117.
  • Meddings, Kirsty. “Credit Where Credit’s Due: Plagiarism Screening in Scholarly Publishing.” Learned Publishing 23, no. 1 (2010): 5–8.
  • ———. CrossCheck Plagiarism Screening: What’s the Magic Number, 2012.
  • “RCR Tip: Plagiarism and IThenticate | Office of Research & Engagement.” Accessed December 10, 2017.
  • United States., United States, Spencer Fullerton Baird, T. A. Conrad, William H. Emory, George Englemann, Charles Girard, et al. Report on the United States and Mexican Boundary Survey :Made under the Direction of the Secretary of the Interior /. Washington : C. Wendell, printer, 1857.
  • ———. Report on the United States and Mexican Boundary Survey :Made under the Direction of the Secretary of the Interior /. Washington : C. Wendell, printer, 1857.
  • “Update on Similarity Check Usage and Developments.” European Science Editing, 2016.
  • Zhang, Yue-hong Helen, Xiao-yan Jia, Han-feng Lin, and Xu-fei Tan. “Be Careful! Avoiding Duplication: A Case Study.” Journal of Zhejiang University SCIENCE B 14, no. 4 (2013): 355–58.
  • Zhang, Yuehong, and Xiaoyan Jia. “A Survey on the Use of CrossCheck for Detecting Plagiarism in Journal Articles.” Learned Publishing 25, no. 4 (October 1, 2012): 292–307.

Frequently Asked Questions