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Paste your content into the textbox to detect plagiarism or duplication online! DupeOff splits your content to sub-sentences and queries Bing and Google for copies.
  • You can submit 4 sentences for FREE per week as an unregistered user, and if you would like more please purchase a package, 1 DupeOff point = 0.001$ (0.01 cent).
  • Sentences longer than 15 words are truncated, those shorter than 6 words are discarded for accurate results.
  • The DupeOff server stores reports temporarily for 1 day for your convenience.
  • Please enter either a URL or text to check.

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  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.

  • DupeOff trims sentences longer than 15 words for accurate results.
  • If you select split sentence check, DupeOff will attempt to break your sentences into smaller pieces if longer than 10 words. Seaching for sentence parts can provide more accurate results than full sentences as content thieves have grown smart and often take just parts of a sentence.

Repeat plagiarism check periodically to catch content thefts right away. Register to use this feature: dupeoff.com/user.

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