Plagiarism Checker
Make sure your work is original before you submit or publish it. Our plagiarism checker compares your text against web sources, shows a uniqueness score and lists matching pages so you can rewrite or cite them.
Matched sources will be listed here.
How to check for plagiarism
- Paste your essay, article or assignment, or upload a document.
- Click Check plagiarism.
- Review your uniqueness score and the matched sources. Rewrite copied passages with the paraphrasing tool or add citations.
Features
Web-wide comparison
Your text is compared with a large index of public web pages.
Uniqueness score
See at a glance what percentage of your text is original.
Matched sources
Open each matching page to review the overlap.
Works with files
Upload Word, PDF and text documents.
Fix it fast
Use our paraphraser and citation generator to resolve issues in minutes.
Secure
Scans are not stored in a public database.
How to avoid plagiarism
- Take notes in your own words and keep track of every source you read.
- Put direct quotes in quotation marks and cite them.
- When you paraphrase an idea, still cite the original author.
- Use our citation generator for APA, MLA, Chicago and Harvard references.
Frequently asked questions
What counts as plagiarism?
Using someone else’s words or ideas without giving them credit, including copying text, close paraphrasing without a citation and reusing your own previously submitted work without permission.
What is a good plagiarism score?
There is no universal rule, but most teachers expect the uncited similarity to be very low. Matches on quotes and common phrases are normal if they are cited correctly.
Does the plagiarism checker store my text?
No. Text is sent securely to our scanning partner only to perform the check and is not added to a public database. See our Privacy Policy.