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Free Plagiarism Checker

Scan your essay or assignment against billions of web pages in seconds. Then, when you need the report your university will trust, get a Turnitin-level plagiarism + AI report from £14.95.

0 / 3,000 words (free check)

Basic web-based check — your text is never stored. Not affiliated with Turnitin and not a substitute for it.

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100,000+ students · Turnitin-level technology

How the Free Check Works

A quick originality snapshot in three steps — no account, no upload, no cost.

1

Paste your text

Drop in up to 3,000 words of your essay, assignment or paper.

2

We scan the web

Your sentences are checked for verbatim matches across billions of indexed web pages.

3

See your matches

Get an instant originality estimate plus the real source URLs your text matches.

Free Check vs Full Turnitin-Level Report

The free tool gives a quick web snapshot. Your university wants more — academic databases, paraphrasing and AI-written content. That is what the full report delivers.

What you getFree Web CheckFull Report
Word limitUp to 3,000Up to 50,000+
Checks live web pages
Academic journals & databases
Turnitin-grade similarity database
AI-content detection
Paraphrased & synonym-swap plagiarismLimited
Every matched passage highlighted
Downloadable PDF report
PriceFreefrom £14.95

Plagiarism + AI Detection, in One Report

Universities now check for two things at once: copied text and AI-generated writing. Our full report flags both. You get a Turnitin-grade similarity score against academic databases and the web, plus an AI-content score showing how much of your work reads as machine-generated — so you can fix every issue before your tutor sees it.

 Turnitin-grade plagiarism similarity score

 AI-content detection (ChatGPT, Gemini, Claude & more)

 Matched sources with every passage highlighted

 Paraphrase & synonym-swap detection

 Downloadable PDF you can submit with confidence

Check Plagiarism + AI Try Free AI Detector
Plagiarism and AI detection report

What’s Inside Your Report

Clear, detailed and easy to act on — built to mirror what your university sees.

Exact Similarity Score

A precise percentage of text matching academic sources, journals, books and the web — references and common phrases excluded.

Plagiarism percentage

Matching Sources

Every matched source listed and highlighted — from a few words to full paragraphs — so you can find and fix each one.

Matching sources

AI-Content Detection

A separate score flags passages likely written by AI tools, so you can rewrite them in your own voice before submission.

Advanced, Customisable

Exclude quotes and reference lists, adjust the small-match threshold, and pick which databases to check against.

Simple, Per-Document Pricing

No subscription. Pay once per document and get your full plagiarism + AI report.

Small document

£14.95

Up to 7,000 words

MOST POPULAR

Normal document

£24.95

7,000 to 50,000 words

Large document

£34.95

50,000+ words

How the Full Report Works

From upload to a clean, submission-ready document in four steps.

Upload

Upload

Upload your Word or PDF document.

Detect

Detect

Checked against millions of academic sources, billions of web pages, and AI patterns.

Report

Get Report

Receive your similarity + AI report with matches highlighted.

Fix

Fix

Paraphrase or cite to remove issues — or let our editors help.

Trusted by Over 100,000 Students

Confidential by design — your document is deleted after your report is delivered and is never added to any public database.

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Plagiarism Checker FAQs

Is the ResearchProspect plagiarism checker free?
The instant web-based check on this page is completely free, for up to 3,000 words, with no sign-up. For a full Turnitin-level report — academic databases, AI detection, highlighted matches and a downloadable PDF — pricing starts at £14.95.
Does the checker also detect AI-generated content?
Yes. The full report includes AI-content detection alongside the plagiarism similarity score, flagging passages likely written by tools such as ChatGPT, Gemini or Claude. The free web check covers plagiarism only.
Which sources is my document checked against?
The full report, which uses the same technology as Turnitin, checks against millions of academic sources such as Elsevier, IEEE and Springer, plus billions of web pages. It does not access Turnitin’s private student-paper database — only your university can compare against that.
Will my paper be stored or made public?
No. The free tool never stores your text, and your uploaded document is deleted after your report is delivered. It is never added to any public or in-house database, so you will never get a 100% self-match at your university.
Can I check a research paper or dissertation?
Yes. The full report handles everything from a 3,000-word essay to a 50,000+ word thesis, in .doc, .docx or .pdf, across all major subjects and languages. Reports for documents under 7,500 words are usually ready in 10–20 minutes.

Check Your Work Before Your University Does

Run the free check above, or get a full Turnitin-level plagiarism + AI report from £14.95.

Get Your Report See a Sample Report

Questions? Talk to our team

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