Plagiarism Checker
Free plagiarism checker. Extracts unique phrases from your text and checks each against Google with exact-match search queries.
Enter text
Longer phrases reduce false positives. 7–10 is recommended.
2 phrases extracted
Plagiarism Checker
The Plagiarism Checker breaks your text into distinctive multi-word phrases and lets you search Google for exact-match instances of each phrase elsewhere on the web.
How it works
- Your text is split into sentences locally in your browser
- Each sentence becomes a Google search query wrapped in quotes for exact-match
- Click any link to open that search in a new tab
- "Check all" opens the first 10 simultaneously (popup-blocker may stop this)
Advantages over commercial checkers
- Privacy: Your text never leaves your browser
- Free: No word limits or subscription
- Source visibility: You see the matching pages directly
Limitations
This approach finds web-published matches. Academic plagiarism checkers (Turnitin, iThenticate) have access to private databases of student papers and journal articles, so use those for academic submission requirements.