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Your plagiarism report within 10 minutes
How it works
1. Upload
Upload a Microsoft Word, PDF or ODT file of your paper, enter your details and pay.
2. Wait a few minutes
Your document is compared to billions of web pages, books, articles and more. This may take a few minutes.
3. Receive the report
Similarities are highlighted and matched to the source. You also receive a plagiarism score.
4. Fix plagiarism
Add missing citations or rewrite your text. Our award-winning Knowledge Base can help you.
Frequently asked questions
At the moment we do not offer a monthly subscription for the Scribbr Plagiarism Checker. Plagiarism checks can be bought separately — prices depend on the size of your document.
| Small document (up to 7,499 words) | £13.95 |
|---|---|
| Normal document (7,500-49,999 words) | £22.95 |
| Large document (50,000+ words) | £31.95 |
Similarities in your document are highlighted for quick and easy review. Each colour corresponds to a source in your Sources Overview at the right side of your report.
Information can often be found in more than one place. For this reason, other sources citing the same information you used can come up in your Sources Overview.
The important thing is to make sure you’ve cited the source of the material. Try to find the original source, but if you can’t find it, it’s best to cite the source where you found the information.
Scribbr’s free plagiarism checker estimates the risk of plagiarism by calculating the percentage of text in your document that’s similar to other sources.
A moderate or high risk of plagiarism means that the plagiarism software detected several similarities worth reviewing.
Note that similarities are not necessarily plagiarism. You will need to decide on your own whether your text needs revision or citation.
The free report tells you if your text contains potential plagiarism and other writing issues. The premium report gives you the resources you need to review issues in detail and resolve them.
| Free report | Premium report (from $19.95) |
|---|---|
Plagiarism Checker
Grammar Checker
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Plagiarism Checker
Grammar Checker
AI Detector
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Yes, Scribbr offers a limited free version of its plagiarism checker. It uses the industry-leading plagiarism detection technology and has access to most content databases.
If you’ve correctly cited all the sources you used, then you do not need to use a plagiarism checker before submitting your paper to your instructor. However, it is very easy to commit plagiarism accidentally, even if you’ve been very careful. To ensure that you didn’t forget to cite anything, you should use a plagiarism checker yourself.
A plagiarism checker works by using advanced database software to scan for matches between your text and existing texts.
To help you decide which checker to use, we conducted in-depth research comparing popular plagiarism checkers to find out which one is best.
Your work should not contain any plagiarism. Even if your score is 1%, you will need to review each similarity and decide whether it’s necessary to revise your work.
But contrary to popular belief, plagiarism checkers work by detecting not plagiarism, but similarities. Not all similarities found by the Scribbr Plagiarism Checker constitute plagiarism. Our check sometimes flags the following:
- Properly cited quotes
- In-text citations or your reference list
- Commonly used phrases
Extensive testing proves that Scribbr’s plagiarism checker is one of the most accurate plagiarism checkers on the market in 2024.
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.
Scribbr’s plagiarism checker offers complete support for 20 languages, including English, Spanish, German, Arabic, and Dutch. The add-on AI Detector is available for English, Spanish, German, French and Dutch texts.
The complete list of supported languages:
- Arabic
- Bosnian
- Croatian
- Czech
- Danish
- Dutch
- English
- Finnish
- French
- German
- Greek
- Italian
- Norwegian
- Polish
- Portuguese
- Russian
- Serbian
- Spanish
- Swedish
- Turkish
Scribbr uses advanced plagiarism detection technology similar to the software used by most universities and publishers in the UK, ensuring you receive the same or very similar results.
The add-on AI detector is powered by Scribbr’s proprietary software and is capable of detecting texts generated by ChatGPT, Perplexity and other generative AI tools with high accuracy.
Your document will be compared to the world’s largest and fastest-growing content database, containing over:
- 99.3 billion current and historical webpages.
- 8 million publications from more than 1,700 publishers such as Springer, IEEE, Elsevier, Wiley-Blackwell, and Taylor & Francis.
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.
Scribbr uses similar plagiarism software to most universities in the UK, providing the same or very similar results.
However, universities may check your work against private student paper databases, which Scribbr can’t access, possibly leading to small differences.
To help, Scribbr offers a free Self-Plagiarism Checker add-on, allowing you to manually upload your source documents to ensure you haven’t accidentally plagiarized.