Free plagiarism checker
Search the public web for pages that share your wording, with a link to every match. Or put two texts side by side and watch the shared phrases light up.
A search-connected AI looks for published pages containing the same or closely paraphrased sentences and returns cited links. The passage is sent once to our AI provider and not stored.
Matches
Results appear here with a link to each source and the fragment that matched.
Plagiarism and AI: check both
Copying and AI generation are different problems. Copied text matches something that already exists, so a search finds it. AI-generated text is usually new wording, so a plagiarism search comes back clean – that’s why you also need the AI detector. The essay checker runs AI signals, grammar and readability in one pass.
How the compare tool works
Both texts are cut into overlapping runs of words – “shingles”. With the slider at 5, “the quick brown fox jumps over” produces “the quick brown fox jumps” and “quick brown fox jumps over”. Any shingle that appears in both texts marks those words as shared. The percentages tell you how much of each text is covered by shared runs.
This is the same basic idea behind the fingerprinting used by commercial checkers, just applied to two texts you choose – useful for comparing a draft against its source, or two submissions against each other.
If you find a match
- Check whether the passage is quoted and cited. If it is, it isn’t plagiarism.
- Check the date: the source may have copied from the writer, not the other way round.
- Short matches of common phrasing (“at the end of the day”) are coincidences, not copying.
- For your own work: quote it, cite it, or rewrite the idea in your own words and still cite it.
Questions people ask
Is this plagiarism checker free?
Yes. The web originality search is free with a fair-use limit of a few searches every ten minutes (2,500 characters each). The two-text comparison is unlimited and runs in your browser.
How does the web search work?
A search-connected AI model runs web searches for the sentences in your passage and reports published pages that contain the same or closely paraphrased wording, with the link and the fragment that matched. It only covers the public web, not private databases of student papers.
Can it replace Turnitin?
No. Turnitin and similar services compare work against their own databases of previously submitted student papers and subscription journals, which no free tool can access. Use VerifyWrite for a quick public-web check and for comparing two specific texts.
Is my text added to a database?
No. We keep no copy of what you search or compare. Unlike some checkers, we never add your work to a repository, so checking a draft here can never cause a self-plagiarism match later.
What counts as plagiarism?
Presenting someone else’s words or ideas as your own without credit. Quoting with quotation marks and a citation is not plagiarism; neither is common knowledge or a widely used phrase. Close paraphrase without a citation usually is.
The rest of the kit
Your text follows you between tools, so you can paste once and check everything.