Plagiarism Checker
Check any text against billions of web pages and see exactly which sources it matches.
Paste your text, get a similarity score and a full list of matching sources with links.
What this plagiarism checker does
Paste any text and it is compared against billions of indexed web pages, articles, and public documents. You get an overall similarity score plus every source that matches, with the number of matching words and a link so you can verify each one yourself.
The score separates identical wording from lightly reworded and paraphrased passages, so you can tell a real copy from a common phrase. Use it before you publish, submit, or hand off content.
How it works
Paste your text
Drop in the text you want to check. Six words is enough to run a check.
Create your free account
The check runs on your account, so your results stay yours. It takes a few seconds and no card is needed.
Read your report
You get a similarity score and every matching source, with links so you can confirm each match.
Frequently asked questions
Is the plagiarism checker free?
Yes. Every account gets a free check covering the first 500 words. After that you can continue on any paid plan.
How long does a check take?
About a minute in most cases. The text is compared against a very large index of web pages, which is what takes the time.
What does the similarity score mean?
It is the share of your text that matches something already published, split into identical wording, lightly changed wording, and paraphrased passages.
Do you store or publish my text?
Your text is used to run your check and is not published anywhere.
Is a high score always plagiarism?
No. Quotes, references, common phrases, and standard terminology all produce matches. The source list is there so you can judge each match yourself.
How is this different from an AI detector?
A plagiarism checker asks whether your text already exists somewhere else. An AI detector asks whether it was written by a machine. They answer different questions and are often used together.
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