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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. AI detector
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. Once your check is complete, run your text through our
Easily review any copied content in your writing with QuillBot’s AI-powered Plagiarism Checker. It compares your text against a vast source database and provides a clear plagiarism score along with a detailed report. For even stronger results, refine your draft with humanize AI
Our online plagiarism Checker makes it easy to see which sections of your document are missing proper citations.
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.
Easily cite highlighted text with our Plagiarism Checker. We've integrated our advanced Citation Generator to make it easier to cite the identified similarities. You can select from APA, Chicago, and MLA styles when citing sources.
QuillBot is committed to promoting and protecting academic integrity. Our Plagiarism Checker, Citation Generator
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.

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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.
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.
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.
Yes! With a Premium account, you can purchase:
here
to upgrade to a Premium subscription.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.
We support the following textual file types: .html, .txt (UTF-8 encoded). We also support non-textual file types, like .pdf, .docx.
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.
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.
Yes, QuillBot's Plagiarism Checker works in 100+ different languages. Currently, our tool is available in multilingual languages, You can use the tool directly in your preferred language by visiting our localized Plagiarism checker pages: Spanish French German Portuguese Dutch
Simply upload your content, and our plagiarism scanner tool will check for possible plagiarism in your writing and generate the plagiarism score.
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.
No, Plagiarism Checker cannot detect paraphrased content. However, AI Detector can detect text that has been refined using AI tools.
QuillBot’s Citation Generator can help you create proper citations for any sources used in your text.
QuillBot’s Plagiarism detector continuously updates its source database to deliver accurate and reliable results every time you scan.
Yes. content can be original and still resemble AI-generated writing. QuillBot AI detector tool helps you to identify AI-generated content, making it easier for you to refine your writing before submitting work.