About this plagiarism checker
This checker helps you find copied content in two honest, practical ways. Compare mode measures how much of one text appears word-for-word in another — ideal when you already have the suspected source, such as a submitted essay and a reference article, or an old and a new version of a page. Web phrase scan picks the most distinctive sentences from your text and gives you one-click exact-match searches on Google and Bing, the same technique teachers and editors have used for years to trace copied passages to their origin.
Because everything runs in your browser, there is no word limit, no daily quota, and no risk of your unpublished work being stored on someone's server — a real concern with free checker sites that quietly keep submissions.
How to check plagiarism
- Choose Compare two texts and paste the source in the left box and the text to check on the right, then press Check plagiarism.
- Review the match percentage, the highlighted passages and the list of longest matched phrases.
- For an open-web check, switch to Web phrase scan, paste your text, and click the search links next to each distinctive sentence.
- Download the report if you need a record of the result.
What the match score means
The score is the share of words in the checked text that sit inside phrases of five or more consecutive words also found in the source. Under 15% usually reflects common phrases and quotations; above 40% suggests substantial copying. Judgement still matters: properly quoted and cited material will also match, and paraphrased copying will not. No free tool — including this one — scans the entire internet in one click; services that claim to do so rely on paid search APIs behind the scenes.
Frequently asked questions
Is this plagiarism checker really free and unlimited?
Yes. Because the checking runs in your own browser rather than on our servers, there is nothing for us to meter — no word limits, no daily quota, no sign-up and no premium tier.
Does it scan the whole internet?
No free tool truly does. Compare mode checks your text against a source you provide, and Web phrase scan gives you one-click exact-match Google and Bing searches for your most distinctive sentences — the same method teachers use. Full-web scanning in one click requires paid search APIs.
Is my text stored anywhere?
No. Your text never leaves your device — the analysis happens in the page itself and is gone when you close the tab. That makes it safe for unpublished manuscripts and confidential documents.
What match percentage counts as plagiarism?
There is no universal number. Under 15% usually reflects common phrases and properly quoted material, while anything above 40% deserves a serious look. Always review the highlighted phrases in context before drawing conclusions.