Upload the document you would like to check for plagiarism.
Documents are not added to our database and will never be shared.
*Prices are per check, not a subscription.
Upload a Microsoft Word, PDF or ODT file of your paper, enter your details and pay.
Your document is compared to billions of web pages, books, articles and more. This may take a few minutes.
Similarities are highlighted and matched to the source. You also receive a plagiarism score.
Add missing citations or rewrite your text. Our award-winning Knowledge Base can help you.
Scribbr’s 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.
The add-on AI detector is also powered by Turnitin software and includes the Turnitin AI Writing Report.
Note that Scribbr’s free AI Detector is not powered by Turnitin, but instead by Scribbr’s proprietary software.
Extensive testing proves that Scribbr’s plagiarism checker is one of the most accurate plagiarism checkers on the market in 2022.
The software detects everything from exact word matches to synonym swapping. It also has access to a full range of source types, including open- and restricted-access journal articles, theses and dissertations, websites, PDFs, and news articles.
At the moment we do not offer a monthly subscription for the Scribbr Plagiarism Checker. This means you won’t be charged on a recurring basis – you only pay for what you use. We believe this provides you with the flexibility to use our service as frequently or infrequently as you need, without being tied to a contract or recurring fee structure.
You can find an overview of the prices per document here:
|Small document (up to 7,500 words)
|Normal document (7,500-50,000 words)
|Large document (50,000+ words)
Please note that we can’t give refunds if you bought the plagiarism check thinking it was a subscription service as communication around this policy is clear throughout the order process.
Your document will be compared to the world’s largest and fastest-growing content database, containing over:
Note: Scribbr does not have access to Turnitin’s global database with student papers. Only your university can add and compare submissions to this database.
Scribbr’s plagiarism checker offers complete support for 20 languages, including English, Spanish, German, Arabic, and Dutch.
The add-on AI Detector and AI Proofreader are only available in English.
The complete list of supported languages:
If your university uses Turnitin, the result will be very similar to what you see at Scribbr.
The only possible difference is that your university may compare your submission to a private database containing previously submitted student papers. Scribbr does not have access to these private databases (and neither do other plagiarism checkers).
To cater to this, we have the Self-Plagiarism Checker at Scribbr. Just upload any document you used and start the check. You can repeat this as often as you like with all your sources. With your Plagiarism Check order, you get a free pass to use the Self-Plagiarism Checker. Simply upload them to your similarity report and let us do the rest!
Your writing stays private. Your submissions to Scribbr are not published in any public database, so no other plagiarism checker (including those used by universities) will see them.