What you get with a premium plagiarism check

Plagiarism report

Plagiarism Checker

Catch accidental plagiarism with high accuracy with Scribbr’s Plagiarism Checker in partnership with Turnitin.

AI detector

AI Detector

Detect AI-generated content, like ChatGPT3.5 and GPT4, with Scribbr’s AI Detector.

Grammar checked document

AI Proofreader

Find and fix spelling and grammar issues with Scribbr’s AI Proofreader.

* Only available when uploading an English .docx (Word) document

Plagiarism checker comparison graph

Rely on the most accurate plagiarism checker of 2023

Scribbr’s plagiarism checker, in partnership with Turnitin, detects plagiarism more accurately than other popular tools — particularly when texts are edited. This makes it the go-to plagiarism checker for students in the UK.

See test results

Free plagiarism risk analysis

Find out if your writing contains potential plagiarism

The free plagiarism checker, in partnership with Turnitin, will give you a heads-up if your writing is similar to the content in our database.

📚 Largest database 99B web pages & 8M publications
🌎 Supported languages 20 languages
See a list of top matching sources

View your top 5 matching sources

The Sources Overview shows you the top five sources that match your writing. You can see the domain, database, and the number of matching words for each source. It’s important to cite these sources!

Spelling meta report

Identify spelling and grammar issues in your document

In addition to checking for plagiarism, powerful AI software scans your English text for spelling and grammar issues. The free check gives an overview of the issues per category.

Submit your paper with confidence, knowing it’s free of plagiarism

Make your writing plagiarism-free with the premium plagiarism checker

Get a precise plagiarism percentage

Get a precise similarity percentage

The premium plagiarism checker provides you with an accurate similarity score that tells you what percentage of your paper is not original.

Review similarities for plagiarism

Review highlighted text snippets for missing citations

Similarities in your document are highlighted for quick and easy reviewing. Each color corresponds to a source in the Sources Overview.

Plagiarism report with side-by-side comparison

Compare your writing to the original text side by side

Use the comparison feature to see how similar your writing is to the original without leaving the plagiarism checker report.

Check for self-plagiarism by uploading unpublished works

Check for self-plagiarism by uploading previous assignments

Upload previous assignments or a classmate’s paper to catch (self-)plagiarism that is otherwise difficult to detect by regular plagiarism checkers.

Review your spelling and grammar corrections in Word

Writing issues are corrected automatically when you upload a Word document. To review the corrections, you can download a Word document with Track Changes.

Price per document

Small document
Up to 7,499 words
Regular document
7,500 - 49,999 words
Large document
50,000+ words

Prices are per check, not a subscription

Money-Back Guarantee
Excellent Review score

Scribbr’s plagiarism checker is rated 4.9 out of 5 based on 13,370 reviews.

Privacy guarantee
Privacy guarantee

Submissions will never be added to our content database. Therefore, no other plagiarism checker will see your text.

Turnitin Similarity Report

Scribbr's plagiarism checker is perfect for you if you:

  • Are a student writing an essay or paper
  • Value the confidentiality of your submissions
  • Prefer an accurate plagiarism checker
  • Want to compare your work against publications
  • Can benefit from an AI Detector

This plagiarism checker is not for you if you:

  • Are a copywriter, SEO, or business owner
  • Need to check lots of documents for plagiarism

Start for free

The go-to plagiarism checker for students and academics

University applicant

University applicants

Ace your personal statement for your university application.

Compare your UCAS personal statement against billions of webpages, including other essays.

  • Avoid having your personal statement flagged or rejected for accidental plagiarism.
  • Make a great first impression on the admissions officer.
University applicant

University applicants

Ace your personal statement for your university application.

Compare your UCAS personal statement against billions of webpages, including other essays.

  • Avoid having your personal statement flagged or rejected for accidental plagiarism.
  • Make a great first impression on the admissions officer.


Submit your assignments with confidence.

Detect plagiarism using software similar to what most universities use.

  • Spot missing citations and improperly quoted or paraphrased content.
  • Avoid grade penalties or academic probation resulting from accidental plagiarism.


Take your journal submission to the next level.

Compare your submission to millions of scholarly publications.

  • Protect your reputation as a scholar.
  • Get published by the journal of your choice.
Student running a plagiarism check

You don't need a plagiarism checker, right?

You would never copy-and-paste someone else’s work, you’re great at paraphrasing, and you always keep a tidy list of your sources handy.

But what about accidental plagiarism? It’s more common than you think! Maybe you paraphrased a little too closely, or forgot that last citation or set of quotation marks.

Even if you did it by accident, plagiarism is still a serious offense. You may fail your course, or be placed on academic probation. The risks just aren’t worth it.

Scribbr & academic integrity

Scribbr is committed to protecting academic integrity. Our plagiarism checker, AI Detector, APA Reference Generator, proofreading services, and free Knowledge Base content are designed to help educate and guide students in avoiding unintentional plagiarism.

We make every effort to prevent our software from being used for fraudulent or manipulative purposes.


Ask our team

Want to contact us directly? No problem. We are always here for you.

Frequently asked questions

See all
How accurate is Scribbr’s plagiarism checker?

Extensive testing proves that Scribbr’s plagiarism checker is one of the most accurate plagiarism checkers on the market in 2022.

The software detects everything from exact word matches to synonym swapping. It also has access to a full range of source types, including open- and restricted-access journal articles, theses and dissertations, websites, PDFs, and news articles.

What plagiarism and AI detection software does Scribbr use?

Scribbr’s Plagiarism Checker is powered by elements of Turnitin’s Similarity Checker, namely the plagiarism detection software and the Internet Archive and Premium Scholarly Publications content databases.

The add-on AI detector is powered by Scribbr’s proprietary software.

To which databases will my document be compared?

Your document will be compared to the world’s largest and fastest-growing content database, containing over:

  • 99.3 billion current and historical webpages
  • 8 million publications from more than 1,700 publishers such as Springer, IEEE, Elsevier, Wiley-Blackwell, and Taylor & Francis

Note: Scribbr does not have access to Turnitin’s global database with student papers. Only your university can add and compare submissions to this database.

Can I buy a monthly subscription for the Scribbr Plagiarism Checker?

At the moment we do not offer a monthly subscription for the Scribbr Plagiarism Checker. Plagiarism checks can be bought separately — prices depend on the size of your document.

Small document (up to 7,499 words) £13.95
Normal document (7,500-49,999 words) £22.95
Large document (50,000+ words) £31.95
Can other plagiarism checkers see my submissions to Scribbr?

Your writing stays private. Your submissions to Scribbr are not published in any public database, so no other plagiarism checker (including those used by universities) will see them.

What is the difference between the free and premium report?

The free report tells you if your text contains potential plagiarism and other writing issues. The premium report gives you the resources you need to review issues in detail and resolve them.

Free report Premium report (from $19.95)
Plagiarism Checker

  • Plagiarism risk assessment
  • Top matching sources

Grammar Checker

  • Number of writing issues
Plagiarism Checker

  • Precise similarity percentage
  • Complete list of matching sources
  • Document view to quickly review similarities
  • Side-by-side comparison with the original text
  • Upload private documents

Grammar Checker

  • Downloadable Word document with all your writing issues corrected using Track Changes

AI Detector

  • Precise AI writing percentage
How long does it take to generate the plagiarism report?

Generating your (free or premium) plagiarism report takes between 1 and 10 minutes, depending on the document size.

In that time, your document is compared to the world’s largest content database, with over 99 billion webpages and 8 million publications.

What languages are supported by the plagiarism checker?

Scribbr’s plagiarism checker offers complete support for 20 languages, including English, Spanish, German, Arabic, and Dutch.

The add-on AI Detector and AI Proofreader are only available in English.

The complete list of supported languages:

  • Arabic
  • Bosnian
  • Croatian
  • Czech
  • Danish
  • Dutch
  • English
  • Finnish
  • French
  • German
  • Greek
  • Italian
  • Norwegian
  • Polish
  • Portuguese
  • Russian
  • Serbian
  • Spanish
  • Swedish
  • Turkish
Will Scribbr give the same result as my university’s plagiarism checker?

If your university uses Turnitin, the result will be very similar to what you see at Scribbr.

The only possible difference is that your university may compare your submission to a private database containing previously submitted student papers. Scribbr does not have access to these private databases (and neither do other plagiarism checkers).

Luckily, many papers, theses, and dissertations are also published in public databases that Scribbr does have access to.