Verify the originality of reports, briefs, memos, and other business documents
Feel confident that written content delivered to your clients is unique
Protect your reputation by ensuring opinions, client letters, and more are original
Uphold journalistic ethics by confirming the originality of your articles
Uphold ethical writing principles in personal projects or content creation
Maintain standards of academic integrity in essays, papers, and more
Feel confident your work is yours
Real-time report and analysis
Quickly and accurately review all instances of plagiarized writing in your work with our Plagiarism Checker, which provides a comprehensive plagiarism score and report.
Clear and actionable feedback
Our online plagiarism Checker makes it easy to see which sections of your document are missing proper citations.
100+ languages
QuillBot’s Plagiarism Checker lets you scan text in more than 100 languages, including English, Spanish, French, Portuguese, Arabic, Russian, German, Greek, Chinese, and Japanese.
Monthly scans
Scan up to 25,000 words per month with a Premium subscription. You can always buy more words if you need them.
Improve your writing with Plagiarism Checker
Running a plagiarism check is an essential part of the writing process. By scanning your work before submitting it, you can ensure you've cited all of your sources properly and haven’t unintentionally plagiarized another writer. Using proper citations is critical to maintaining your credibility and upholding ethical writing practices. Even unintentional plagiarism can damage your reputation, which is why it's extra important to always double-check your work. With QuillBot's Plagiarism Checker, you can feel confident your writing is properly cited and doesn't contain any accidental plagiarism.
Review your plagiarism report in just 3 easy steps:
1
Get a subscription
Choose from 1 of 3 Premium plans, giving you access to all of QuillBot’s features, including our Plagiarism Checker.
2
Upload files
We accept a variety of file types, including.txt,.pdf,.docx, and.html.
3
View the report
Receive a report detailing potential plagiarism and relevant source links within minutes.
Our Premium subscription includes the Plagiarism Checker and so much more.
125 words in Paraphraser
Standard and Fluency modes
Limited use of Synonym Slider
1 Freeze Word
1,200 words in Summarizer
Plagiarism Checker (25,000 words)
Unlimited words in Paraphraser
Unlimited Custom and 9 predefined modes
Full use of Synonym Slider
Unlimited Freeze Words
6,000 words in Summarizer
Unique summaries using custom instructions
Faster processing speed
Compare modes
Tone insights
Paraphraser History
Learn best practices around academic integrity
Be honest
Cite your sources
Show responsibility
Acknowledge authors
QuillBot is committed to promoting and protecting academic integrity. Our Plagiarism Checker, Citation Generator and guides are intended to educate students on best practices to avoid unintentional plagiarism.
Here’s the thing: even paraphrased writing needs citations. Ideas can be plagiarized just as easily as words, so if you take someone’s idea and reword it, it still needs to be cited. Trying to pass off someone else’s idea as your own, even if it has been reworded, is is just as unethical as directly copying a quote. Everything that did not originate in your brain needs to be accurately cited.
We support every writer
We’re more than just a Plagiarism Checker. We offer a variety of different AI writing tools to help you with every step of the writing and editing process. Explore more of what we offer below.
QuillBot Plagiarism Checker FAQs
What is plagiarism?
Plagiarism is when you use another person’s words or ideas in your work without giving them proper credit. This can be in the form of copying another person’s work word-for-word, but it can also mean taking someone’s ideas and paraphrasing them without citing the original author. Plagiarism can be accidental or intentional, but it’s still plagiarism. Intentional plagiarism is when you knowingly take another’s work and pass it off as your own. Accidental plagiarism is when you take another’s work without meaning to, such as forgetting to add a citation. However, accidental plagiarism can still have consequences for your academic or professional career. That’s why it’s always important to check your work with a scanner like QuillBot’s.
How are plagiarism scans calculated?
Our Plagiarism Checker uses machine learning algorithms to compare your writing to other works in a vast database. Our AI analyzes the semantics and wording of your paper and determines if any content has been taken from other sources without proper citations. At the end of the scan, our tool gives your paper a similarity score that indicates what percentage of your writing is likely plagiarized from other works.
Is QuillBot's Plagiarism Checker free?
No, you must have a Premium account to use Plagiarism Checker. Premium accounts allow you to scan 25,000 free words per month and purchase additional words. Plagiarism Checker scans include a plagiarism score, a list of plagiarized sources, in-depth feedback regarding which sections of text may have been plagiarized, a downloadable report, and more.
Can I increase the word limit for the plagiarism checker?
Yes! With a Premium account, you can purchase:
- 6,250 words for $2.45
- 25,000 words for $8.95
- 62,500 words for $19.95
How much do plagiarism scans cost?
Plagiarism scans are calculated using the exact number of words in your document. When you conduct a scan, the word length of your document is subtracted from the number of words remaining in your account. Previously, our tool counted pages instead of words; this new system is clearer and more accurate.
What file formats are supported by QuillBot's Plagiarism Checker?
We support the following textual file types: .html, .txt (UTF-8 encoded). We also support non-textual file types, like .pdf, .docx.
How can I check my usage of the Plagiarism Detector tool?
With a Premium account, the number of words available that month is displayed at the top of the Plagiarism Checker home page. Your scan history will also show you how many words each document used.
Is my content stored or shared during the plagiarism check?
QuillBot stores your content in order to run the plagiarism report so you can access your reports in the future. Our third-party vendor, CopyLeaks, does not store your content. QuillBot will never share your content with any third parties outside of CopyLeaks.
Can I use QuillBot's Plagiarism Checker to scan documents in multiple languages?
Yes, QuillBot's Plagiarism Checker works in 100+ different languages.
How much of a paper can be plagiarized and still be considered unique?
Taking another person’s words or ideas and passing them off as your own is always plagiarism, and plagiarism is never acceptable. However, you can use another person’s words or ideas if you give proper credit.
Can QuillBot's AI Plagiarism Checker detect paraphrased content?
No, Plagiarism Checker cannot detect paraphrased content. However, AI Detector can detect text that has been refined using AI tools.
How can I accurately cite my sources after finding plagiarism using the Plagiarism Detector?
QuillBot’s Citation Generator can help you create proper citations for any sources used in your text.