The Plagiarism Checker For Students

Detailed plagiarism report
Largest plagiarism database
Own Sources Checker

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Most advanced technology

Our software only highlights the similarities that are most likely plagiarism. Commonly used words and phrases along with your reference list are ignored.

Largest plagiarism database

In partnership with Turnitin, the Seekrot Plagiarism Checker compares your document to over 70 billion web pages and 69 million scholarly publications.

Safe and confidential

We never add your paper to our database. After the check, you can delete your document right away. Your document stays yours.

Detect All Types Of Plagiarism

Like many other plagiarism checkers, the Seekrot Plagiarism Checker identifies sentences that are exactly the same as in the original source.

However, it also detects plagiarism in paragraphs where the sentence structure is changed, synonyms are used, extra words are inserted or text from multiple sources is combined.

Best Plagiarism Checker

Compared to other well-known plagiarism checkers, the Seekrot Plagiarism Checker is more accurate and detects more plagiarism.

Why? Our database contains not only websites but also books and journal articles. Combine this with the most advanced plagiarism detection technology available, and you have the best plagiarism checker.


Used By Over 100,000 Students


Thousands of students have used the Seekrot Plagiarism Checker to detect, understand and correct plagiarism.

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Designer | Developer

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Own Sources Checker

Have you used any unpublished or private documents as sources, such as an unpublished journal manuscript or a friend’s paper?

You can now add these documents to the Own Sources Checker and compare them against your document for plagiarism.

The Own Sources Checker is an add-on tool that is temporarily free (normally $14.95) in combination with the Seekrot Plagiarism Checker.


Detailed Plagiarism Report

Similarity Percentage

The similarity percentage indicates what portion of your text matches other sources in the database. It gives you a clear and accurate idea of the originality of your writing.

Document View

Similarities are highlighted in your document, allowing you to check them for incorrect or missing citations quickly. Each similarity corresponds to a source in the sidebar.

Matched Sources

In the sources overview, you can easily find the original source and see a preview of the original text, making it easy to compare it to your own writing and cite it correctly.

Features We're Proud Of

Industry-Leading Technology


We partner with Turnitin, the leader in plagiarism prevention software.


Advanced Controls


You can exclude databases, ignore similarities in quotes, and change the threshold for small matches.


Your Paper Stays Yours


Unlike many other plagiarism checkers, we don’t add your document to a content database.


Plagiarism Support


Our plagiarism experts are happy to answer all your questions! Call, email or chat with us!


Own Sources Checker


Detect similarities between your paper and unpublished or private documents using the Own Sources Checker.


Works With 20 Languages


Our software detects plagiarism in 20 languages, including English, Spanish, and Arabic.





100% Happiness Guarantee


At Seekrot, we want you to be completely happy with the service we provide. If you’re not 100% satisfied, we’ll go the extra mile to change that, whether that means a full refund, a free second check, or something else. That is our 100% happiness guarantee.

Ready To Detect And Fix All Plagiarism?

Small Document

Up To 7,500 Words

$ 19.95
Per Document

Regular Document

7,500 - 50,000 Words

$ 29.95
Per Document

Large Document

50,000+ Words

$ 39.95
Per Document

SHORT ANSWERS TO COMMON QUESTIONS

What technology does theSeekrot Plagiarism Checker use?

TheSeekrot Plagiarism Checker is powered by elements of Turnitin’s Similarity Checker, namely the plagiarism detection software and the Internet Archive and Premium Scholarly Publications content databases.

Will my document be published on a (public) database?

No, theSeekrot Plagiarism Checker does not publish your document in any public database (unlike other plagiarism checkers).

In addition, you can delete all your personal information and documents from theSeekrot server as soon as you’ve received your plagiarism report.

Which sources are used for theSeekrot Plagiarism Checker?

TheSeekrot Plagiarism Checker, in partnership with Turnitin, compares your document against the largest and fastest-growing content database in the world:

  Over 70 billion current and historical web pages.

  Over 69 million journal articles and books from more than 1,700 publishers such as      Springer, IEEE, Elsevier, Wiley-Blackwell and Taylor & Francis.

TheSeekrot Plagiarism Checker does not have access to Turnitin’s global database with student papers. Only your university can add and compare submissions to this database.

When should I use the Own Sources Checker instead of theSeekrot Plagiarism Checker?

The Seekrot Plagiarism Checker compares your document against the largest plagiarism database in the world. It will detect any similarities with documents in that database.

However, you might be unsure if all of the sources you used are in that database – for example, because some of your sources are unpublished. In this case, you can make use of our Own Sources Checker. Here you can add all the sources you want to a private database and compare them with your own document.

How long does the Seekrot Plagiarism Checker take?

The Seekrot Plagiarism Checker takes around 10 minutes.

For documents larger than 25,000 words it can take a bit longer. You will be shown an estimate on the order overview page.

As soon as the check is done we will send you an email.

Will I get a 100% match at my university when I use the Seekrot Plagiarism Checker?

No, you will never get a 100% match, because the Seekrot Plagiarism Checker does not store any documents in a shared database.

Will the result of the Seekrot plagiarism report be the same as at my university?

The Seekrot plagiarism report is similar to the report your supervisor will see, but there are two main differences:

Access to more detail and resources
The Seekrot Plagiarism Checker is optimized for students, which means that you will receive a detailed report with extra information and resources to fix and prevent plagiarism.

No access to private university databases
Your university might have a private database with submitted student papers that your document is compared with. The Seekrot Plagiarism Checker (or any other plagiarism checker) does not have access to this database.

However, many papers and theses are also published in public databases. The Seekrot Plagiarism Checker will compare your text with all documents that are in these public databases.

Can I check my document for plagiarism multiple times?

The Seekrot Plagiarism Checker checks your document for plagiarism once per upload. We recommend that you follow two simple steps to thoroughly revise all text snippets that might be plagiarized.

By following those steps, you can be confident that you have removed all plagiarism from your document. It is therefore not necessary to reupload your document for a new Plagiarism Check. If you would still like to perform a second or third check, you can purchase each new check at the regular price.

Step 1: Review every similarity found by the Plagiarism Check

Think about whether or not the match makes sense to you:

Is the match a correctly cited quote, part of a reference list, or a general statement    that does not relate to a specific author? Then you don’t have to revise it. You can    simply exclude the similarity from your total score.

Is the match a text snippet (e.g. a series of words or a whole sentence) that you    have copied from a publication without citing the source? Then move on to step 2.

Step 2: Revise each potentially plagiarized text snippet

There are two ways you can fix a similarity:

Paraphrasing:
Rewrite the snippet in your own words. Be careful: Simply rearranging the sentence or replacing a few words with synonyms is not sufficient to remove plagiarism. It’s best to delete the similarity and write the idea again from scratch to ensure the phrasing is completely original.

Quoting:
If you want to use the author’s exact words, put the text snippet in quotation marks.

Whether you paraphrase or quote, a citation is always required. Do you need more help revising your similarities? Have a look at our step-by-step guide.