Compare two texts for plagiarism

Paste a source and the text you want to check. Wording that appears in both is highlighted, and the longest shared passages are listed with their length.

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Original text

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Changed text

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Words in the changed text that also appear, in the same order, in the original are highlighted. 66.7% similar (22 shared words).

Many farmers rely on insects. Bees visit flowers to collect nectar and pollen, and in doing so they move it between plants. Without this transfer many crops would produce far less fruit, which affects prices.

Longest shared passages (6 words or more)

13 wordsBees visit flowers to collect nectar and pollen, and in doing so they
9 wordsWithout this transfer many crops would produce far less

At a glance

What it checks: Only the two texts you paste, against each other. Nothing is searched online
Shared passages: Runs of 6 or more words that appear in both texts in the same order, longest first
Line breaks and capitals: Ignored on this page, so reformatting doesn't hide a copied passage

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Compare two texts for plagiarism: what to know

This page starts the text diff for this case. For every option and how to use it, see the text diff.

What this check can and can't do

This is a side-by-side check. It tells you how much wording one text shares with another text you already have, such as a student essay and the article it may have drawn on, or your blog post and a page that looks suspiciously like it.

It doesn't search the web, journals or other students' work, so it can't find copying from a source you haven't pasted. It also can't spot paraphrasing that changes most of the words, or tell quoted and referenced text from copied text. Read the highlighted passages before you draw any conclusion.

Reading the result

Highlighted words in the second text also appear, in the same order, in the source. The list below shows each shared run of 6 words or more. Short matches like "in the first place" are normal in any two texts on the same subject; long runs are worth a closer look.

The similarity score above the result gives an overall figure. Use it to compare several suspect texts against one source, not as proof on its own.

Questions

Is this a plagiarism checker?

It's a comparison tool. It shows which wording two texts share, but it doesn't search any database or the web.

Are the texts I paste stored?

No. Both texts stay in your browser and nothing is sent to us, so it's safe for unpublished work.