Best Plagiarism Detection Tools for Educators

In a perfect world students would understand that education is for their benefit and put their all into every assignment. Unfortunately, every educator working today knows how far off the reality is from that ideal.   

Cheating isn’t just something that a few bad apples do every now and then, it proliferates. In a 2010 survey of high school students, one in three admitted to using the web to plagiarize. That makes it a problem no teacher can ignore.


How Technology Makes it Worse

Plagiarism is nothing new. In fact, many of the great writers and thinkers of the last couple of centuries have been accused of borrowing the words of others for their own purposes. But how ubiquitous it is has changed.

How much work would you have to do to copy the words of this article in a new document of your own? Highlight a section, right click, copy, paste, and you’re done. Technology has brought an ease to the process of plagiarism that previous generations couldn’t have imagined.

Then, of course, there’s the availability of information. Whatever subject you assign your students to research, they can find thousands, if not millions, of resources available on the subject with a simple internet search. There’s plenty of writing out there to copy and doing so is easier than it’s ever been before.

5 Plagiarism Tools That Will Turn Tech into the Solution

 While it has played a role in making plagiarism easier, technology also helps teachers spot when it is happening. As with so many things in life, the technology itself is neither good nor bad – it’s all in how you use it.

Of the many plagiarism detection tools out there, only a few are specifically designed for educator use.  Heading to Google to begin your search will bring you to a lot of tools meant more for businesses and bloggers than teachers. Some of these may still be useful to you, but they’re probably not the best options for your purposes.

These five plagiarism detection tools were all created with instructors in mind. Some are only available if purchased by an institution, but others can be accessed by anyone.

1. TurnItIn

TurnItIn is one of the most popular plagiarism detection products out there. The software has been used to analyze millions of papers against a database of billions of web pages, student papers, and academic articles.

Fast Facts:

  • The service is cloud-based and can be used on a computer or tablet.
  • Purchase plans are available for educational institutions.
  • Turnitin is used by 15,000 institutions around the world.
  • It provides teachers with a percentage of the student’s assignment that’s unoriginal, highlights the lines in question, and shows where the original content is from.

Some educators have had issues with false positives, so anyone using TurnItIn should be willing to review the examples of unoriginal content provided to make sure they are indeed samples of plagiarism.

TurnitIn is probably the top choice out there for plagiarism detection for educators, but you can only use it if your school subscribes. As an individual teacher, there’s not a feasible way to purchase access.


 Made by a tech savvy middle school teacher tired of turning to Google for plagiarism detection, Plagiarism Checker was made specifically with the needs of teachers in mind. It’s simple to use, but not quite as rigorous as some other alternatives on the list.

Fast Facts:

  • It’s free.
  • The tool matches copy-and-pasted student text against the resources found in Google or Yahoo.
  • It only searches phrases, rather than the whole paper.

 This one is a good choice if you want something free and easy that will catch the most obvious cases of plagiarism, but if your students are savvy enough to be cribbing their work from resources not freely available online, this one will miss them.

3. SafeAssign

 SafeAssign is a service provided with Blackboard and as such works seamlessly with the CMS commonly used at many institutions.

Fast Facts:

  • It can’t be purchased as a standalone product, but is available to all enterprise Blackboard clients.
  • It’s meant to be a tool for helping students understand how to cite sources correctly, as well as a plagiarism detection tool for educators.
  • It matches papers against a database of resources that includes internet pages, academic databases, any resources provided by the institution, and past papers submitted by students.

Like TurnItIn, this isn’t a tool you can purchase on your own. If your school is already using Blackboard, then you have a useful plagiarism detection solution already built in. If not, you’ll have to turn to one of the other options on the list.

4. Plagscan

Plagscan is a web-based plagiarism detection service that allows you to either copy and paste student assignments or upload them to be scanned for plagiarized content.

Fast Facts:

  • Plans are available for both individual users and for institutions.
  • It checks submitted papers against a database of billions of documents.
  • It provides a green, yellow, or red “Plag Level” score to any documents scanned to give you a quick idea of which ones have issues.
  • It provides reports that highlight plagiarized lines and provide information on the original sources.

The Plagscan site doesn’t offer as much information as some of the other sites on just what’s included in the database they’re checking papers against. Tests of the software by an independent third party do suggest it is fairly effective though. It found more instances of plagiarism than comparable plagiarism detection tools in three out of five tests.

Plagscan works on a monthly subscription model for institutions and allows individuals to purchase PlagPoints that are applied toward the number of words and pages scanned.

5. The Plagiarism Checker

Similar to (#2 on this list) in both name and functionality, the Plagiarism Checker was developed by a college student and then largely forgotten about – until he realized it was getting significant regular use. This site offers a simple copy-and-paste function that matches your student’s writing against other sites and articles on the web.

Fast Facts:

  • It’s free, with a premium version that claims to be more powerful (although outside reviewers are skeptical).
  • It allows you to paste longer works rather than just phrases.
  • Premium users can upload files in addition to the copy-and-paste option.


The site doesn’t provide much information about the database it’s using to check files against and the results of some third-party tests are less than promising.  That said, if you want something free and simple that allows you to search longer pieces of text than, this one might be worth bookmarking.

Which One Should You Choose?

Really, which tool is best for you depends on what you need and what you (or your institution) are ready to invest in. The free options won’t be as comprehensive, but not all students are especially savvy at finding obscure resources to plagiarize – especially if you’re teaching students in early high school or younger where most plagiarized sources will likely come straight from the web.

In many cases, just letting students know you’ll be checking their work for plagiarism can serve as a deterrent.  The creator of explains in the FAQs that within a couple of years of starting to use a plagiarism checker, word got around amongst the students and instances of cheating decreased from a third to about one in twenty.

 No matter what you do, you will probably have a few students still trying to take the easy way out. Being able to identify plagiarism when it happens gives you the opportunity to step in and try to set them on the right path.



  1. Dorothy Mikuska

    January 27, 2015 at 8:16 am

    Software that catches students plagiarizing after the paper is completed, such as the article discusses, is merely a band aid. Students and writers need to learn to give attribution to all their sourced information and to put that information in their own words. Only then will they demonstrate to themselves and their reader that they understand the material. Consider PaperToolsPro (, online software where users write notes by entering the copied quotation, writing it in their own words in an adjacent text box, and identifying each note with descriptors and keywords to help organize the notes into an outline and draft. Bibliographic data are entered for each source to create a bibliography of all sources and a citation for each note. Catching plagiarism at the end of the process teaches students nothing except don’t get caught. Helping them do the assignment correctly and ethically teaches them to avoid plagiarism throughout the process and understand their research.

  2. Kristen Hicks

    January 27, 2015 at 10:19 am

    Thanks for your comment Dorothy! I completely agree with the point you make that catching it after the fact is only half a solution (if that). I do think it’s still valuable for teachers to be able to identify plagiarism when it occurs though.

    We did discuss internally the topic of ways teachers can keep students from plagiarizing to begin with (there may still be something on that to come). Teaching students to better understand the line between properly citing sources and plagiarism is definitely one important way to do that.

  3. Brian Silberberg

    January 27, 2015 at 2:21 pm

    Taking Dorothy’s comment into account, I understand where she is coming from, but disagree. As the start of this article says, one of the big problems with plagiarism now is that kids can just go online and copy and paste blocks of text into their papers. By making it clear to them that educators have the tools to catch them red-handed if they try to do things this dishonest and foolish, we can all create an environment where plagiarizing because it seems that technology has made it so easy is heavily disincentivized.

    • Kristen Hicks

      January 29, 2015 at 4:57 am

      The second tool on the list was made by a teacher who found that her reputation for being a teacher who actually checked for plagiarism reduced instances of it. Being able to catch it does play a role in helping to prevent it as well.

  4. Sandra Carswell

    January 28, 2015 at 1:33 pm

    Another deterrent is to create research projects/papers that are not easily copied. When asking students to write a report, you are in essence, asking for it to be plagiarized. If students are assigned to synthesize information to create something new that demonstrates their understanding, then that is not so easily copied from the web. Create a scenario for them to write to, such as a “breaking news” announcement (audio or video or written) of a historical event, including “interviews” with the parties involved. There are any number of ways to do this.

  5. Mark

    January 29, 2015 at 4:20 am

    I wouldn’t rely on any of the above mentioned detectors. I use the one that is not in the list – They scan within 4 seconds and have official partnership with Google and Bing, so I am sure about its accuracy.

    • Kristen Hicks

      January 29, 2015 at 12:01 pm

      Thanks for the recommendation! It’s always good to hear what works well straight from teachers.

  6. Tess Lara

    February 7, 2015 at 8:50 pm

    This is just amazing! I just took a paragraph and it came out where I took it from. This is really incredible. I guess this is really good news.