Plagiarism Checker

Scan your text sentence by sentence against the web for matching phrases. An aid, not a definitive originality guarantee. No signup.

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How it works: we search the web (via our own search backend) for exact-phrase matches of your sentences and show where they appear. This is an aid, not a definitive originality guarantee — matches may be legitimate quotes or common phrases, and no match does not prove originality. Up to 20 sentences are checked per run.

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This plagiarism checker scans your text sentence by sentence against the web, looking for exact-phrase matches and showing where they appear. Paste your text and tap Check. It is an aid to spot possible matches, not a definitive originality guarantee, and results should always be reviewed with judgement.

On this page

How to Check Text for Plagiarism Step by Step
What the Plagiarism Checker Does and How
A Match Versus Proof of Plagiarism
Who Uses a Plagiarism Checker
Pro Tips for Reviewing Matches
Common Plagiarism Checking Mistakes to Avoid
Related Tools You May Need Next
Frequently Asked Questions

How to Check Text for Plagiarism Step by Step

Paste your text. Paste the text you want to check into the input box. The checker works through it sentence by sentence.
Tap Check Plagiarism. Tap the button to start the check. The tool searches the web for each sentence to look for exact-phrase matches.
Wait for the results. The tool searches sentence by sentence, so give it a moment. A number of sentences are checked per run.
Read the results. The tool shows how many sentences were found online and how many had no match, with the sources where matches appear.
Review each match yourself. Open the matching sources and judge each one: a match may be a legitimate quote, a common phrase, or genuine overlap.

Checking text against the web for matches

What the Plagiarism Checker Does and How

A plagiarism checker helps you find text that also appears elsewhere on the web. This tool works sentence by sentence: for each sentence, it searches the web for an exact-phrase match and shows where any matches appear. That lets you see which parts of your text also exist online, and where.

It is important to understand what this does and does not tell you. Finding a matching sentence online means that wording appears on the web; it does not by itself prove plagiarism. Matches can be legitimate quotations, common phrases, or text that others have copied from your source. So the checker is an aid to spot possible overlap, not a definitive originality guarantee.

A match is an aid, not proof of plagiarism. Finding a sentence online means that wording appears on the web; it does not prove copying. Matches may be quotations, common phrases, or text copied from you. Review each match yourself rather than treating a match as a verdict.

The tool checks a number of sentences per run, so for a long document you may check it in parts. Because it searches the web live, it works best on distinctive sentences: very short or very common sentences may match widely without meaning anything, while a distinctive sentence found online is more worth reviewing.

The results are a starting point for your own review, not a verdict. For each match, you open the source and judge whether it is a quotation, a coincidence, or genuine copying. Used this way, the checker helps you catch unintentional overlap and check originality, always alongside your own judgement.

A Match Versus Proof of Plagiarism

Result	What it shows	How to read it
Found online	Sentences with a web match	Worth reviewing, not proof
No match	Sentences with no match found	No exact match seen
Sources	Where matches appear	Open and judge each
Per run	A set number of sentences	Check long text in parts

Who Uses a Plagiarism Checker

Students checking their workA student checks a draft for sentences that match online sources, to catch anything they quoted without attributing and confirm their own wording.

Writers checking originalityA writer scans a piece for phrases that appear elsewhere, catching unintentional overlap before publishing.

Bloggers checking contentA blogger checks an article for sentences found online, making sure their content is their own and reviewing any matches.

Editors reviewing submissionsAn editor runs a submission through the checker as one step in reviewing it, following up on any matches by hand.

Anyone checking for matchesA person who wants to see whether their text appears online pastes it in, taps Check, and reviews the matches found.

Pro Tips for Reviewing Matches

Review every match by hand. A match is a prompt to look, not a verdict. Open each matching source and judge whether it is a quotation, a common phrase, or genuine overlap, since the tool cannot tell these apart for you.

Attribute legitimate quotes. If a match is a quotation you meant to include, make sure it is properly attributed. The checker helps you catch quotes you may have forgotten to reference.

Check long documents in parts. Because a set number of sentences is checked per run, paste long documents in sections to check them fully, rather than expecting one run to cover everything.

Focus on distinctive sentences. Very short or common sentences may match widely without meaning anything. Pay most attention to distinctive sentences that appear online, as those are more likely to signal real overlap.

Use it before you publish. Running a check before publishing or submitting gives you a chance to catch and fix unintentional overlap, or add missing attribution, while you still can.

Combine with other tools. To compare two specific texts, our Text Similarity Checker measures their overlap, and the Word Counter measures your text.

Common Plagiarism Checking Mistakes to Avoid

Treating any match as plagiarism. A match means the wording appears online, not that you plagiarised. It could be a quotation, a common phrase, or text others copied from your source. Treating every match as plagiarism, without reviewing it, leads to wrong conclusions.

Expecting a single originality score. This tool shows sentence-by-sentence matches to review, not a single percentage that certifies originality. Expecting one definitive score misunderstands what it does; the value is in the specific matches and their sources.

Ignoring that others may copy you. If your text is published, others may copy it, so a match can mean someone copied from you, not the other way around. Consider the direction of copying when reviewing a match, rather than assuming you are the copier.

Checking only part of a document. Because a set number of sentences is checked per run, checking only one run of a long document leaves the rest unchecked. Check the whole text in parts so you do not miss matches in sections you skipped.

For related checks, our Text Similarity Checker compares two specific texts, the Duplicate Word Counter finds repeats within a text, and the Word Counter measures length.

Sentence matches shown as an aid, not proof

Frequently Asked Questions

How does the plagiarism checker work?

It works through your text sentence by sentence. For each sentence, it searches the web for an exact-phrase match and shows where any matches appear. This lets you see which parts of your text also exist online and where. A number of sentences are checked per run, so for a long document you check it in parts. The results show how many sentences were found online, how many had no match, and the sources for the matches.

Does a match prove plagiarism?

No. Finding a sentence online means that wording appears on the web; it does not by itself prove plagiarism. A match may be a legitimate quotation, a common phrase, or text that others have copied from your own published work. That is why the tool is an aid to spot possible overlap, not a definitive originality guarantee. You should open each match and judge it yourself rather than treating a match as proof.

How many sentences does it check?

The tool checks a set number of sentences per run, because each sentence is searched against the web live. For a short piece, one run may cover it; for a longer document, you paste and check it in parts so the whole text is covered. Focusing on distinctive sentences is worthwhile, since very short or common sentences can match widely without indicating any real overlap.

Why are some sentences found and others not?

A sentence is reported as found when its exact wording appears on a web page the search reaches. Distinctive sentences that exist online are the ones most likely to be found. Very short or very common sentences may not be searched as usefully, and original sentences will usually have no match. No match found means no exact match was seen, which is a good sign but not an absolute guarantee of originality.

Is this a full originality score?

No. Rather than a single percentage that certifies originality, the tool gives you sentence-by-sentence matches to review, with their sources. This is more useful for catching specific overlap, but it means the value lies in reviewing the matches yourself, not in reading one number. Treat the results as a starting point for your own judgement about originality and attribution.

Is my text uploaded anywhere?

To check for matches, the tool searches the web for the sentences in your text, so those sentences are sent to a search backend to look for matches. This is necessary for a web-based plagiarism check. Bear this in mind for highly sensitive or confidential text, and check only what you are comfortable searching against the web.

Can I use it on my phone?

Yes. The tool runs in your browser and works the same on a phone, tablet or computer, with no app to install. Paste your text and tap Check Plagiarism, then give it a moment as it searches sentence by sentence. The results, showing matches and their sources, appear on your device, ready for you to review each one.

Is the plagiarism checker free?

Yes, it is completely free with no account and no limit on how often you check, though a set number of sentences is checked per run. The tool runs in your browser and searches the web for matches. Remember that it is an aid to spot possible overlap, not a definitive originality guarantee, so always review the matches it finds with your own judgement.