Excellent Review score
Scribbr’s plagiarism checker is rated 4.9 out of 5 based on 14,113 reviews.
Ensure the originality of your work with Scribbr's plagiarism checker, using similar software as leading universities and publishers
Drag & drop your document
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Catch accidental plagiarism with high accuracy using similar plagiarism software as leading universities.
See what’s written by humans and what is AI-generated or refined with AI tools like ChatGPT, Perplexity, and Claude.
Find and fix spelling, grammar and style issues with the AI Proofreader.
Scribbr’s plagiarism checker detects plagiarism more accurately than other plagiarism detection tools—particularly when texts are heavily edited. This makes it the go-to plagiarism checker for students in the UK.
Scribbr’s free plagiarism checker alerts you if your writing matches content in our databases, helping you determine if you’ll benefit from upgrading to the Premium report.
| 📚 Largest database | 99B web pages & 8M publications |
|---|---|
| 🌎 Supported languages | 20 languages |
The Sources Overview shows you the top five sources that match your writing. It’s important to cite these sources if you quoted or paraphrased from them.
In addition to checking for plagiarism, powerful AI software scans your English text for spelling and grammar issues. The free check gives an overview of the issues per category.
The premium plagiarism checker provides you with an accurate similarity score that tells you what percentage of your paper is not original.
Similarities in your document are highlighted for quick and easy reviewing. Each color corresponds to a source in the Sources Overview.
Use the comparison feature to see how similar your writing is to the original without leaving the plagiarism checker report.
Upload previous assignments or a classmate’s paper to catch (self-)plagiarism that is otherwise difficult to detect by regular plagiarism checkers.
Writing issues are corrected automatically when you upload a Word document. To review the corrections, you can download a Word document with Track Changes.
Prices are per check, not a subscription
Scribbr’s plagiarism checker is rated 4.9 out of 5 based on 14,113 reviews.
Submissions will never be added to our content database. Therefore, no other plagiarism checker will see your text.
This plagiarism checker is not for you if you:
Ace your personal statement for your university application.
Compare your UCAS personal statement against billions of webpages, including other essays.
Submit your assignments with confidence.
Detect plagiarism using software similar to what most universities and publishers use.
Take your journal submission to the next level.
Compare your submission to millions of scholarly publications.
You would never copy-and-paste someone else’s work, you’re great at paraphrasing, and you always keep a tidy list of your sources handy.
But what about accidental plagiarism? It’s more common than you think! Maybe you paraphrased a little too closely, or forgot that last citation or set of quotation marks.
Even if you did it by accident, plagiarism is still a serious offense. You may fail your course, or be placed on academic probation. The risks just aren’t worth it.
Scribbr is committed to protecting academic integrity. Our plagiarism checker, AI Detector, APA Reference Generator, proofreading services, and free Knowledge Base content are designed to help educate and guide students in avoiding unintentional plagiarism.
We make every effort to prevent our software from being used for fraudulent or manipulative purposes.
Want to contact us directly? No problem. We are always here for you.
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 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:
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 |
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.
Generating your (free or premium) plagiarism report takes between 1 and 10 minutes, depending on the document size.
In that time, your document is compared to the world’s largest content database, with over 99 billion webpages and 8 million publications.
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:
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.