thesis plagiarism checker

Free Online Plagiarism Checker

Possible plagiarism detected!

If you submit this paper, your institution may take disciplinary measures against you. The content requires editing and modification of parts. We know how to make it unique.

This is weighted average of all matches in your text. For example, if half of your paper is 100% plagiarized, your score would be 50%

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How to avoid plagiarism?

Proper citation style.

Avoid plagiarism by always listing the source and formatting it correctly when you are note-taking. Take care of the proper formatting and citation style when using content from outside sources.

Write on your own

Avoid borrowing and overusing large pieces of the content from outside sources, especially from Wikipedia. Write your own thoughts and use sources only to support your opinion (remember to cite it though!).

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PapersOwl expert can edit up to 50% of your content, proofread and polish your paper to make it plagiarism free and ready to use.

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Plagiarism Checker Review

Get speed and uniqueness when you use the free Papersowl plagiarism checker that accepts an unlimited word count compared to other platforms.

Online Plagiarism Checker For Students

Writing an academic paper can be challenging when you’re not sure if it’s original enough to pass a plagiarism check. Of course, students take information from various sites before writing their own text. Sometimes, it just so happens that certain parts are very similar to your resources, making your professor think that you’ve just copied work from somewhere. That’s why it’s crucial for any modern college or university student to ensure that their work has 100% original content to maintain academic integrity.

Luckily, a free plagiarism checker online can solve this issue quickly and easily. Many professional writing services use a plagiarism checker for research paper. However, students sometimes forget that they should too. But with so many options that pop up when you ask Google to “check my paper for plagiarism”, how do you choose the right one for detection? We’ve got the solution in the form of PapersOwl’s free plagiarism checker tool! Our simple tool makes it convenient to check any writing task without having to spend a dime. It works quickly and highly accurately, ensuring that you get the top grade you deserve. So, if you want to check plagiarism online before turning your task in, head over to our website and get started!

Accurate Check for Plagiarism with Percentage

Many students wishing to produce original content aren’t quite sure how to get an exact percentage of plagiarised text in their work. This percentage is important since many universities have a certain limit of non-unique words you can have in your essay for it to be considered okay. If your plagiarism search doesn’t give you the exact percentage, you can’t be sure if your assignment will go through or not.

When using a free plagiarism tool, it’s essential to have this data provided to you. Only when you have it can you decide which parts to change and which ones to chuck out to achieve your desired results. Plagiarized content is a big issue in modern educational institutions, so getting reliable and trustworthy results is vital. This is the most essential requirement when you check plagiarism.

PapersOwl’s plagiarism detection tool gives you all the information you need to fix plagiarized content. Whether you’ve fallen victim to accidental plagiarism or have tried to make your life easier by copying some text from different sources, you’ll get an accurate percentage with our plagiarism checker online. If you’re wondering how to check paper for plagiarism, it’s nothing complicated at all! Simply visit our site, paste your whole essay into the relevant text box or upload the text file, click on Check For Plagiarism, and you’ll get accurate plagiarism results in a matter of seconds. You’ll see the problematic parts with plagiarism detected highlighted, with links to where similar content exists. Our service with plagiarism detector will also give you the option to check my paper for plagiarism and then to hire a professional writer to fix your task quickly if you’re busy with other things!

The Fastest Plagiarism Checker Online

Gaining insight into duplicate content only works if you get your results quickly. There are so many free plagiarism software online that promise to do the job for you. However, a lot of them are clunky, slow, and inaccurate. How can you produce original work without similarity detection you can trust?

PapersOwl stands out in this regard because it will detect plagiarism in seconds. This is a plagiarism scanner that’s able to perform a Swift Check to give you a uniqueness check right there and then. It also conducts a Deep Search, going through millions of sources on the internet to check for plagiarism. A document of about 1500 words takes only about 10 seconds to get processed! You get a clear plagiarism score of how much text is plagiarized and how much is original. All the sources that your essay matches are listed based on how much similarity there is in your academic writing. And on top of that, you get a handy Make It Unique button that’ll take you to an order page where you can ask our expert writers to rewrite your work and make it 100% unique.

All of this is done almost instantly, allowing students to continue working on their assignments without missing a beat. Not every plagiarism detection software works this quickly, making ours the best one you’ll ever use.

Plagiarism Checker Helps Boost Your Grade

A lot of students make the mistake of considering their papers automatically free from plagiarism. After all, they’ve written it themselves, so how could it be problematic? What they don’t realize is that it’s very easy to borrow some information mistakenly. Turning such a paper in can cause multiple problems, as your professor might think you haven’t done the work at all.

That is why you should always use a plagiarism scanner to test for plagiarized content in your college papers. Our online plagiarism checker for students is designed for this exact purpose. A simple, free plagiarism check could help you check plagiarism, fix any mistakes you see, and submit high-quality text that no one will question.

Our plagiarism detector has a lot going for it. It makes plagiarism detection easier than ever before. Unlike copying and pasting each passage individually into Google, simply upload the whole file into our plagiarism checker free for students, and you don’t have to do anything else. All the matches are highlighted so you know what to change.

The plagiarism test will give you a uniqueness percentage too. This will help you figure out where you stand and how much time you need to adjust anything if required. So, using our copyright checker online free to check your writing is essential. This way, you’ll submit the task only when you’re sure it meets the level of uniqueness required by your school. As a result, your grades will drastically improve when you check for plagiarism.

Benefits of Free Plagiarism Checker for Students

Our professional online plagiarism checker work offers too many benefits to ignore. With our plagiarism detector, you can enjoy highly accurate results as a comprehensive report. The plagiarism checker for students is designed to help you achieve 100% uniqueness without hassle. Here are the key advantages you can enjoy when you check plagiarism free with our plagiarism detection tool:

It’s completely free! We know you are on a tight budget and should be able to check your paper for plagiarism without worrying about payments, so we’ve made the best similarity checker free for all!

Our software detects plagiarism swiftly. It’ll show you detailed results in as little as 10 seconds so you can continue working immediately.

The report from our plagiarism tool gives you access to all the links from where it has detected similarities in your work. You can head to the relevant sites and see which information you must rewrite to improve your results.

Our best free plagiarism checker doesn’t require any skills and presents its services in a simple-to-use interface that anyone can use.

The plagiarism test allows you to get professional help with your work if you’re short on time. Simply ask one of our writers to rewrite the problematic parts of your text and enjoy top grades.

With PapersOwl plagiarism detector, there’s no need to search the internet for an accurate tool. We have many satisfied students worldwide who can vouch for our plagiarism-checking services. Give our online plagiarism checker free tries as often as you want and see how easy it is to produce original essays without spending a penny!

Free Tools for Writing

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How Does Plagiarism Checker Work?

• If you already have a completed text, all you need is just to copy-paste the whole thing in the special box of the chosen plagiarism tool or website, choose suitable settings (if any), then press “check for plagiarism”. It is quite simple and takes just a few moments.
• Once you have pressed “check for plagiarism”, the system will analyze your text and compare it with different sources to find similarities. As a rule, the duration depends on the text’s length. A standard free online plagiarism checker with percentage can give you the result within five minutes or less.
• When the system finishes the work you will be transmitted to the reporting page – it contains the comprehensive report on your work, a percentage of its uniqueness, and a list of sources on which similarities were detected. Often, such tools also highlight the overlaps that were found.

As you can see, it is simple. However, for the best and reliable result you have to be careful. There are tons of programs and online tools that can be used but keep in mind that many of them work differently and not all are good for you. To be confident in the truthfulness of the received result, you need to select the best plagiarism checker because only a professional and high-quality software can detect all similarities and give you a reasoned assessment.

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Advantages Of Plagiarism Checker By PapersOwl

Why choose us? Our service offers a professional online plagiarism checker with report that will provide you with a comprehensive report to make you confident in the 100% uniqueness of your paper. Our free plagiarism checker for students guarantees the best check and here are the key advantages of using our tool that prove this:

You don’t need to pay anything to check your paper for plagiarism because we know the value of original and unique works.

One of the main benefits of our antiplagiat checker online is that it works so fast that you will not even have enough time to make yourself a cup of coffee while it analyzes your text, and it is safe!

We use the latest and the best algorithms and software in order to provide you with an advanced check and help you receive the high-quality papers.

It is simple in use and won’t take much time!

Many students have already confirmed that our free tool is a great and convenient feature that helped them detect and fix errors that could lead to a failure. With us, you will no longer need to look for a different scanner!

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Plagiarism Checker FAQ

Can i check my essay for plagiarism free online, can i use papersowl plagiarism checker as a student for free, can i check my research paper for plagiarism for free, will the papersowl plagiarism report be the same as at my university, what are the consequences of plagiarism, why wait place an order right now.

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Free plagiarism checker by EasyBib

Check for plagiarism, grammar errors, and more.

• Expert Check

Check for accidental plagiarism

Avoid unintentional plagiarism. Check your work against billions of sources to ensure complete originality.

Find and fix grammar errors

Turn in your best work. Our smart proofreader catches even the smallest writing mistakes so you don't have to.

Get expert writing help

Improve the quality of your paper. Receive feedback on your main idea, writing mechanics, structure, conclusion, and more.

What students are saying about us

"Caught comma errors that I actually struggle with even after proofreading myself."

- Natasha J.

"I find the suggestions to be extremely helpful especially as they can instantly take you to that section in your paper for you to fix any and all issues related to the grammar or spelling error(s)."

- Catherine R.

Check for unintentional plagiarism

Easily check your paper for missing citations and accidental plagiarism with the EasyBib plagiarism checker. The EasyBib plagiarism checker:

• Scans your paper against billions of sources.
• Identifies text that may be flagged for plagiarism.
• Provides you with a plagiarism score.

You can submit your paper at any hour of the day and quickly receive a plagiarism report.

What is the EasyBib plagiarism checker? 

Most basic plagiarism checkers review your work and calculate a percentage, meaning how much of your writing is indicative of original work. But, the EasyBib plagiarism checker goes way beyond a simple percentage. Any text that could be categorized as potential plagiarism is highlighted, allowing you time to review each warning and determine how to adjust it or how to cite it correctly.

You’ll even see the sources against which your writing is compared and the actual word for word breakdown. If you determine that a warning is unnecessary, you can waive the plagiarism check suggestion.

Plagiarism is unethical because it doesn’t credit those who created the original work; it violates intellectual property and serves to benefit the perpetrator. It is a severe enough academic offense, that many faculty members use their own plagiarism checking tool for their students’ work. With the EasyBib Plagiarism checker, you can stay one step ahead of your professors and catch citation mistakes and accidental plagiarism before you submit your work for grading.

Why use a plagiarism checker? 

Imagine – it’s finals week and the final research paper of the semester is due in two days. You, being quite familiar with this high-stakes situation, hit the books, and pull together a ten-page, last-minute masterpiece using articles and materials from dozens of different sources.

However, in those late, coffee-fueled hours, are you fully confident that you correctly cited all the different sources you used? Are you sure you didn’t accidentally forget any? Are you confident that your teacher’s plagiarism tool will give your paper a 0% plagiarism score?

That’s where the EasyBib plagiarism checker comes in to save the day. One quick check can help you address all the above questions and put your mind at ease.

What exactly is plagiarism? 

Plagiarism has a number of possible definitions; it involves more than just copying someone else’s work. Improper citing, patchworking, and paraphrasing could all lead to plagiarism in one of your college assignments. Below are some common examples of accidental plagiarism that commonly occur.

Quoting or paraphrasing without citations

Not including in-text citations is another common type of accidental plagiarism. Quoting is taking verbatim text from a source. Paraphrasing is when you’re using another source to take the same idea but put it in your own words. In both cases, it’s important to always cite where those ideas are coming from. The EasyBib plagiarism checker can help alert you to when you need to accurately cite the sources you used.

Patchwork plagiarism

When writing a paper, you’re often sifting through multiple sources and tabs from different search engines. It’s easy to accidentally string together pieces of sentences and phrases into your own paragraphs. You may change a few words here and there, but it’s similar to the original text. Even though it’s accidental, it is still considered plagiarism. It’s important to clearly state when you’re using someone else’s words and work.

Improper citations

Depending on the class, professor, subject, or teacher, there are multiple correct citation styles and preferences. Some examples of common style guides that are followed for citations include MLA, APA, and Chicago style. When citing resources, it’s important to cite them accurately. Incorrect citations could make it impossible for a reader to track down a source and it’s considered plagiarism. There are EasyBib citation tools to help you do this.

Don’t fall victim to plagiarism pitfalls. Most of the time, you don’t even mean to commit plagiarism; rather, you’ve read so many sources from different search engines that it gets difficult to determine an original thought or well-stated fact versus someone else’s work. Or worse, you assume a statement is common knowledge, when in fact, it should be attributed to another author.

When in doubt, cite your source!

Time for a quick plagiarism quiz! 

Which of the following requires a citation?

• A chart or graph from another source
• A paraphrase of an original source
• Several sources’ ideas summarized into your own paragraph
• A direct quote
• All of the above

If you guessed option E than you’d be correct. Correct punctuation and citation of another individual’s ideas, quotes, and graphics are a pillar of good academic writing.

What if you copy your own previous writing?

Resubmitting your own original work for another class’s assignment is a form of self-plagiarism, so don’t cut corners in your writing. Draft an original piece for each class or ask your professor if you can incorporate your previous research.

What features are available with the EasyBib plagiarism checker? 

Along with providing warnings and sources for possible plagiarism, the EasyBib  plagiarism checker works alongside the other EasyBib tools, including a grammar checker  and a spell checker . You’ll receive personalized feedback on your thesis and writing structure too!

The  plagiarism checker compares your writing sample with billions of available sources online so that it detects plagiarism at every level. You’ll be notified of which phrases are too similar to current research and literature, prompting a possible rewrite or additional citation. You’ll also get feedback on your paper’s inconsistencies, such as changes in text, formatting, or style. These small details could suggest possible plagiarism within your assignment.

And speaking of citations, there are also  EasyBib citation tools  available. They help you quickly build your bibliography and avoid accidental plagiarism. Make sure you know which citation format your professor prefers!

Great! How do I start? 

Simply copy and paste or upload your essay into the checker at the top of this page. You’ll receive the first five grammar suggestions for free! To try the plagiarism checker for free, start your EasyBib Plus three-day free trial.* If you love the product and decide to opt for premium services, you’ll have access to unlimited writing suggestions and personalized feedback.

The EasyBib plagiarism checker is conveniently available 24 hours a day and seven days a week. You can cancel anytime.  Check your paper for free today!.

*See Terms and Conditions

Visit www.easybib.com for more information on helpful EasyBib writing and citing tools.

For informational guides and on writing and citing, visit the EasyBib guides homepage .

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Thesis Checker: Free Online Editor

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Why should you use an online thesis checker?

You’ve already done countless hours of research to write your thesis. You don’t want to spend countless hours correcting it, too.

You’ll sound professional

Wow your supervisors with how grammatically sound your writing is, how clear it is, and how well it flows.

You’ll save time

ProWritingAid’s thesis checker saves you hassle by acting as the first line of defense against pesky grammar issues.

You’ll become a better writer

Every time you run your thesis through ProWritingAid, you’ll see what your common mistakes are and how to fix them.

Professors and students love using ProWritingAid

Great tool for academic work. Easy to use and the reports and summary evaluation of your documents in several categories is very useful. So much more than spelling and grammar!

Debra Callender

If you’re an English teacher, you need to take a look at this tool—it reinforces what you’re teaching, highlights strengths and weaknesses, and makes it easier to personalize instruction.

Jennifer Gonzales

Only reason I managed to get an A in all my freshmen composition classes.

Chris Layton

Your first line of defense before submission

Save time on editing so you can focus on your research. ProWritingAid’s thesis checker helps you quickly and easily improve your grammar and style.

Academic writing made easier

Stop stressing over your first draft. Now you can improve any sentence in just a few clicks. Shorten sentences , correct informal language, expand your sentence variety, and add transitions.

Catch every easy-to-miss mistake

Typos and grammar errors can slip into anyone’s work. ProWritingAid’s AI-powered thesis checker can catch and fix even the trickiest issues so your ideas can shine.

In-depth analysis whenever you need it

Sure, that email might only need a cursory check. But a 100-page thesis needs more comprehensive reviews. Use our structure analysis , complex paragraph alerts , and transitions report to improve your work.

Write clearly, concisely, and accurately

Strike the right balance between clarity and academic rigor with analytical language goals and power verb suggestions . You can ensure your work is professional without sacrificing readability.

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With ProWritingAid, you get more than just an app—you get the tools to become a better writer. Our in-app learning tool comes packed with helpful explanations for every suggestion.

Want more? Join our community or read our blog for advice from our resident experts on how to become a better writer.

ProWritingAid’s Thesis Checker FAQs

1. how do i use the online thesis checker.

Sign up for free, upload your thesis, and run any of ProWritingAid’s 20+ reports. You’ll see a number of suggestions that you can either accept or reject.

2. Does the essay checker work with British English and American English?

The thesis checker works with British English, American English, Australian English, and Canadian English. Just choose the one you’d like to use, and ProWritingAid will tailor its suggestions to match.

3. Is using a thesis checker cheating?

Not at all. The thesis checker won’t ever write the thesis for you. It will only point out possible edits and advise you on changes you need to make. You have full autonomy and can decide which changes to accept.

4. Is there a student discount?

Students who have an eligible student email address can get 20% off ProWritingAid Premium. Email [email protected] from your student email address to access your discount.

5. Can ProWritingAid check my thesis for free?

Absolutely. ProWritingAid offers a free membership to everyone, always, and you can edit up to 500 words at a time. If you need to edit more work, you can upgrade to Premium at any time.

6. Does ProWritingAid have a plagiarism checker?

Yes! ProWritingAid’s plagiarism checker will check your work against over a billion web-pages, published works, and academic papers, so you can be sure of its originality. Find out more about pricing for plagiarism checks here .

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Check Plagiarism

Check-Plagiarism offers a reliable plagiarism checker that is widely used to detect plagiarism. Our plagiarism detector offers deep plagiarism detection for writers as well as students in schools, colleges and universities. To use this tool, enter your content below and click on the button.  

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Features of Check-Plagiarism

Our tool helps to check plagiarism in your essays, assignments, and blogs. There are many helpful features we have developed in our tool. Here are some of the main ones:

Fast & Accurate

Our plagiarism checker scans your text against billions of web pages & online resources. You can check up to 1,000 words at once. (For premium users, the word limit is increased to 20,000).  Upgrade to pro in just $7

100% Safe & Secure

All files and documents checked with our free plagiarism checker are 100% safe & secure. Your data is completely secure on our servers. No user/search engine/crawler can access your data in any capacity.  

Multiple files support

You can check copied content in up to five documents at once (supported formats: doc, docx, txt, and pdf). Scanning multiple papers will not decrease the speed of the tool. You can also compare documents for plagiarism between them.

Easy-to-Use UI

Our plagiarism checker has a very easy-to-use interface. It provides a simple process to check for content similarities. You can generate a detailed report with percentages.   

Enhanced Reporting with the percentage

Our plagiarism detector scans your text with online resources and provides a complete report with percentages. It helps you to check which sentences of your content are unique and which are plagiarized.

Sentence based checking

Our tool scans every single sentence and compares it with all online resources to detect plagiarism. It uses advanced AI algorithms to detect paraphrased plagiarism.  

  Relevant Tools

• Paraphrasing Tool
• Article Rewriter
• Word Count & Character Count
• Citation Generator
• Plagiarism Comparison Search
• Grammar Checker
• Text Summarizer

Why Check-Plagiairsm?

Online plagiarism checker users.

Our online plagiarism checker is widely used and loved by thousands of students, teachers, and content writers. We provide super-fast plagiarism detection solutions for colleges, universities, and all other educational institutes.

Students use it to check their papers, assignments and thesis for plagiarism.  It is important for students to check their papers for plagiarism because plagiarism is considered a form of academic dishonesty . This means that if a student submits a paper that includes plagiarized material, they could face serious consequences , such as failing the assignment or the entire course, or even being expelled from school .

Teachers use our plagiarism checker tool to ensure that their students are submitting original work. Our tool can help teachers quickly identify plagiarism in student work, so they can take appropriate action. 

By using our tool teachers can

Ensure academic integrity: By checking for plagiarism, teachers can ensure that their students are submitting original work and not cheating.

Promote original thinking: teachers can encourage their students to think critically and independently to develop their own ideas

Prevent grade inflation: If plagiarized work is undetected it can lead to grade inflation that can damage the integrity of the institution. It is also important to maintain the reputation of the institution. Check-Plagiarism also provides matched sources, so it helps to cite sources in your document. Use our citation generator  to create APA, MLA, and Chicago formats.

Writers use this plagiarism detector:

To ensure originality : Plagiarism checker helps writers to ensure that their work is original and not copied from other sources.

To identify and correct mistakes : Writers can identify and correct any unintentional mistakes, such as failing to properly cite a source.

To improve credibility : Authors can establish their credibility as trustworthy sources of information by making sure their work is original and properly cited.

Webmasters use this tool to make sure their content is plagiarism-free because

Plagiarized content can damage the reputation and credibility of a website.

It's also important because  Google has clear policies on plagiarized content and penalizes websites that contain copied content.

It can lead to legal problems, If the original content is protected by copyright. 

Educational institutes (colleges and universities) can integrate our tool using Plagiarism APIs .

Law firms use this tool to protect the documents of their clients. 

Check more details about how to avoid plagiarism . 

How to use this Plagiarism Checker free?

To check plagiarism of your content by using our plagiarism detector online, follow the below instructions:

Type or paste your text into the input box.

Exclude the URL (if any) from the “Show Advanced” option. This URL will be ignored while checking for plagiarism, any text copied from the excluded URL will be marked as unique content.

Click on the Check Plagiarism button. We have added recaptcha security to avoid robots. 

All done? No extra steps are needed. Our free online plagiarism checker will scan the given content against millions of online resources and generates an accurate plagiarism report with percentage. With Deep-Search technology, free plagiarism checker can also detect instances of plagiarism accurately.

Frequently Asked Questions?

  what is considered plagiarism.

According to Oxford: “Plagiarism is presenting someone else’s work or ideas as your own, with or without their consent, by incorporating it into your work without full acknowledgment”.

It involves:

1. Copying and pasting someone else's text

2. Paraphrasing someone else's work without proper attribution

3. Using someone else's ideas without giving them credit

4. Using someone else's images, videos, or other media without permission

5. Submitting someone else's work, such as a paper or project, as your own

  Is it plagiarism if you copy and paste but cite the source?

Presenting someone’s idea as your own is considered plagiarism if not properly cited. While if you copy and paste but cite the source with proper formatting then it's not plagiarism.

  Is the usage of plagiarism-checking tools Illegal?

Educational institutions highly recommend plagiarism-checking tools to prevent copying of others’ work. Even research work is not considered authoritative without a plagiarism report. So using plagiarism-checking tools is legal and necessary.

  What are the consequences of plagiarism?

Plagiarism involves serious consequences as its a crime.

Its Academic consequences range to:

• Failing the assignment
• Failing the course
• Institute Suspension
• Expulsion from institution

Its Legal consequences cost you:

• Intellectual Damages
• Criminal Charges
• Loss of your employment

Its Personal consequences can affect you with:

• Loss of credibility
• Damage of Reputation
• Damage to professional relationships
• Slowing down your career, especially in Education

We Cover Multiple Platforms

Our plagiarism-checking process supports one of the most popular platforms, WordPress. You can check for plagiarism/duplication of your content directly from your WordPress admin panel. Just download our plagiarism checker plugin and start using it. Check Plagiarism also support educational institutions through our APIs. Universities, colleges, and other educational institutes & Organisations can integrate our APIs to detect plagiarized content on their own end. Our plagiarism tool works accurately on other platforms as well.   

A WordPress plugin is available to check plagiarism directly from the admin panel.

Configure your plagiarism software with our APIs, to check directly from your server.

How it Works

Content is first parsed into sentences and then every sentence is checked for plagiarism. If any duplication is found against that sentence, it will be marked in red and if that text is unique, it will be shown in green.

Comparing your content

All results are displayed in real-time. You can compare your content with any of the matched URLs with just one click. You can also use this plagiarism tool directly on the plagiarism comparison tool page.  

Happy Customers

Our plagiarism checker is loved by 400,000+ customers worldwide. We have positive feedback from customers of all categories. Look at those reviews below.

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We have 70,000+ happy clients including Masters, Students, Teachers and publishers around the world. A Positive previous record is enough for new users to understand that we have the most accurate plagiarism detector.

This free online plagiarism detector is amazing; it checked my content in seconds with very accurate results. According to me it's the best plagiarism detection software.

I am a student and I use this tool regularly to check plagiarism for my papers. Best plagiarism checker for students.

I used their APIs to configure my college website so that students can check plagiarism free for their papers directly from the college website.

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Scribbr Plagiarism Checker

The #1 plagiarism checker for students, ready to detect all plagiarism.

Upload the document you would like to check for plagiarism.

Upload document

Or drag and drop

Uploading and counting words.

This may take a few seconds.

Documents are not added to our database and will never be shared.

Price per document

*Prices are per check, not a subscription.

Why students choose Scribbr?

• Used by 2078 students in the last 24 hours.
• Largest plagiarism database.
• Detailed and easy plagiarism report.

Your plagiarism report within 10 minutes

How it works.

Upload a Microsoft Word, PDF or ODT file of your paper, enter your details and pay.

2. Wait a few minutes

Your document is compared to billions of web pages, books, articles and more. This may take a few minutes.

3. Receive the report

Similarities are highlighted and matched to the source. You also receive a plagiarism score.

4. Fix plagiarism

Add missing citations or rewrite your text. Our award-winning Knowledge Base can help you.

Frequently asked questions

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.

Similarities in your document are highlighted for quick and easy review. Each colour corresponds to a source in your Sources Overview at the right side of your report.

Information can often be found in more than one place. For this reason, other sources citing the same information you used can come up in your Sources Overview.

The important thing is to make sure you’ve cited the source of the material. Try to find the original source, but if you can’t find it, it’s best to cite the source where you found the information.

Scribbr’s free plagiarism checker estimates the risk of plagiarism by calculating the percentage of text in your document that’s similar to other sources.

A moderate or high risk of plagiarism means that the plagiarism software detected several similarities worth reviewing.

Note that similarities are not necessarily plagiarism. You will need to decide on your own whether your text needs revision or citation.

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.

Yes, Scribbr offers a limited free version of its plagiarism checker in partnership with Turnitin. It uses Turnitin’s industry-leading plagiarism detection technology and has access to most content databases.

Run a free plagiarism check

If you’re a university representative, you can contact the sales department of Turnitin .

If you’ve correctly cited all the sources you used, then you do not need to use a plagiarism checker before submitting your paper to your instructor. However, it is very easy to commit plagiarism accidentally, even if you’ve been very careful. To ensure that you didn’t forget to cite anything, you should use a plagiarism checker yourself.

A  plagiarism checker works by using advanced database software to scan for matches between your text and existing texts.

To help you decide which checker to use, we conducted in-depth research comparing popular plagiarism checkers to find out which one is best.

Best plagiarism checker comparison

Your work should not contain any  plagiarism . Even if your score is 1%, you will need to review each similarity and decide whether it’s necessary to revise your work.

But  contrary to popular belief, plagiarism checkers work by detecting not plagiarism, but similarities . Not all similarities found by the Scribbr Plagiarism Checker constitute plagiarism. Our check sometimes flags the following:

• Properly cited quotes
• In-text citations or your reference list
• Commonly used phrases

What should I do with a found similarity?

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.

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:

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.

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.

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.

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.