research paper plagiarism checker online

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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Plagiarism Checker Review

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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!

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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.

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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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How to Use the Paperpal Plagiarism Checker to Write Responsibly

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Paperpal Prime provides comprehensive language correction, paraphrasing, and generative AI writing capabilities to transform your academic writing.

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Frequently Asked Questions: Paperpal’s Plagiarism Checker

How can i access paperpal’s plagiarism check, how many pages or words can i check per month, will my unused quota transfer to the next month, what software is being used to detect similarity, what database is my writing checked against, how do i interpret the similarity score, why did i get a high similarity score after polishing language with paperpal using copilot’s ai-generated text, can paperpal ensure that my content is not flagged by plagiarism or ai detection tools, my paper is completely original. why is my similarity score so high, what types of documents can i upload, are my documents stored and added to turnitin’s database, understand plagiarism and ethical writing.

Want to master the basics of plagiarism and learn how to use AI tools responsibly? Check out these curated articles on plagiarism and ethical academic writing guidelines!

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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.

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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 1481 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

No, the Self-Plagiarism Checker does not store your document in any public database.

In addition, you can delete all your personal information and documents from the Scribbr server as soon as you’ve received your plagiarism report.

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.

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.

At the moment we do not offer a monthly subscription for the Scribbr Plagiarism Checker. This means you won’t be charged on a recurring basis – you only pay for what you use. We believe this provides you with the flexibility to use our service as frequently or infrequently as you need, without being tied to a contract or recurring fee structure.

You can find an overview of the prices per document here:

Please note that we can’t give refunds if you bought the plagiarism check thinking it was a subscription service as communication around this policy is clear throughout the order process.

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.

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:

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).

To cater to this, we have the Self-Plagiarism Checker at Scribbr. Just upload any document you used and start the check. You can repeat this as often as you like with all your sources. With your Plagiarism Check order, you get a free pass to use the Self-Plagiarism Checker. Simply upload them to your similarity report and let us do the rest!

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.

Plagiarism Checker for Students

Quetext's plagiarism checker is a must-have free tool for every student. Identify plagiarism before it's too late, get resources to improve your writing, and add citations quickly, all for free. You do the writing, and we'll help with the rest.

Why use Quetext over other plagiarism detection tools?

Avoid “accidental plagiarism”.

Our ColorGrade™ feedback feature highlights exact matches vs. near-exact or “fuzzy” matches with corresponding colors. From there, you can resolve plagiarism issues by deleting or altering the at-risk copy.

Cite sources directly in your paper

For the copy you want to keep, you can use our handy “Cite Source” feature to generate citations in MLA, APA, and Chicago formats and insert the citations directly into your document.

Turn your paper in with confidence

Our plagiarism detection tool uses DeepSearch™ Technology to identify any content throughout your document that might be plagiarized. We identify plagiarized content by running the text through three steps:

• Contextual Analysis
• Fuzzy Matching
• Conditional Scoring
• Spelling Checker
• Grammar Checker (beta)

Sign Up for Quetext Today!

Click below to find a pricing plan that fits your needs.

How you can avoid plagiarizing

Know the different types of plagiarism

There are several types of plagiarism, and it’s essential to understand the differences to avoid making these mistakes and prevent plagiarism in the classroom.

• Direct plagiarism: Using someone else’s exact words and using them as your own with no credit to the source. Eliminating portions of the text still qualifies as direct plagiarism.
• Patchwork plagiarism: Creating new text by combining exact phrases or sentences from multiple sources without acknowledging the original authors or sources.
• Self-plagiarism: Attempting to reuse or recycle your previous work and claiming it as a new piece of work without mentioning the source of original publication.
• Source-based plagiarism: Producing false sources within your writing or omitting one or more references from citations.

Cite your sources

Students often think of citations as a simple means of acknowledging another author's work. While this is their main purpose, there are other benefits as well.

Source citations also show readers where to go to learn more. By providing context around the citation in student papers, such as the source medium and when it was published, readers can locate the information more easily. Giving too little source information or improperly formatting it can result in unintentional plagiarism. These mistakes also make it difficult for readers to locate the original source and verify information.

Quetext's citation generator makes it easy for students to accurately cite their sources without slowing down their writing process. Once a user inputs the text, the software identifies the passages that require a citation and subsequently generates it in the style required — APA, MLA, or Chicago.

Always use a plagiarism checker

The best way to avoid severe plagiarism consequences is to use a plagiarism checker. Often, plagiarism is unintentional and results from poor paraphrasing of material found online. Using a plagiarism checker, the student can avoid accusations of any kind of plagiarism and benefit from a close review of the original material.

Quetext's plagiarism checker provides a speedy, easy process for students to receive accurate results, identifying areas of concern and providing on-page solutions.

Plagiarism Checker for Students FAQ

What are the consequences if a student is caught plagiarizing.

The consequences of plagiarism vary according to the student’s academic institution and grade level. For example, a middle school student who plagiarizes within an essay may receive a stern warning and additional instruction related to the process of citing sources or summarizing one’s thoughts.

However, students in higher education institutions guilty of plagiarism in academic papers face much steeper repercussions, including, but not limited, to failing grades and disciplinary or legal action. Factors such as the assignment itself, the instructor, and whether or not it is your first offense impact the outcome.

Depending on the severity of the situation, plagiarism can also impact a student’s reputation or future career opportunities.

How does a plagiarism checker help students?

A plagiarism checker helps students be proactive in finding instances of plagiarism before an assignment is completed and turned in with no way to correct the errors.

In addition, by identifying the potential conflicts early, students can conduct further research to find alternative sources to understand the material better and revise or rewrite the offending passages.

Plagiarism checkers also help students learn innovative writing techniques, improve their writing skills through better research and experience in summarizing ideas, and preserve academic integrity.

Do teachers use plagiarism checkers?

Many teachers use plagiarism checkers to ensure a student’s submission is 100% original work. With the rise of easy-to-use tools like Quetext, checking for authenticity and text matches is a quick and affordable process to scan millions of online data sources.

Using plagiarism checkers also allows teachers to educate their students on the importance of citing sources and the ethical responsibilities of research and opinion writing.

Plagiarism has always been a source of concern for teachers, but until now, options for manual detection have limited their opportunities to identify the problem efficiently. However, the evolution of technology in this area has made the tools more accessible than ever.

How do teachers check a paper for plagiarism?

Teachers are skilled at detecting plagiarism, especially those who have been teaching for a significant period or who teach in the areas of English or Literature. Some teachers use a simple technique of entering a sentence into a search engine to find instances of duplicate text on web pages.

However, this manner of plagiarism detection is manually intensive and dependent upon unreliable algorithms. Some may use their writer’s intuition by identifying anomalies in sentence structure, inconsistencies in vocabulary or grammar, or a combination of all of these.

Others use more sophisticated and robust plagiarism detection software, like Quetext. Quetext can scour millions of sites using DeepSearch™ technology to identify plagiarism in seconds. These tools also enable instructors to work with students to improve their writing and avoid repeating the same mistakes in the future.

Can students get in trouble for accidental plagiarism?

Yes, students can be penalized for plagiarism, even if it was an accident. Unfortunately, instructors have no way of knowing the intent behind plagiarism. Depending on the type of plagiarism, instructors may allow leeway for students to learn from their mistakes and correct the work without the threat of severe consequences.

However, repeat offenders are less likely to receive this flexibility and may face steeper penalties. Additionally, instructors of college-level courses with clear plagiarism guidelines and policies may be less inclined to let students off the hook and instead enforce severe consequences.

Is there a free plagiarism checker for students?

Yes! Quetext offers both a free and a paid subscription for students to seamlessly verify their writing. Quetext goes beyond traditional plagiarism checkers to provide students with advanced technology that puts content through three layers of evaluation in just a matter of seconds. This level of insight enables students to understand the degree to which the text has been plagiarized and decide whether to rewrite the text or use the citation assistant to cite sources.

Quetext also offers a detailed report students can use to document their editing efforts and present as proof of a plagiarism-free, 100% original content document.

Quetext's plagiarism tool also offers flexible pricing for its Pro features which facilitates the citation of online sources, attributions, and real-time feedback for writing improvement.

How can a student check for plagiarism?

Anyone can enter the text from a research paper into a search engine and find potential matches that identify instances of plagiarized content or duplicate content. However, this method is largely ineffective and does not identify every area of concern.

Students can use Quetext's free online plagiarism checker by creating an account, copying and pasting the text in question into the plagiarism checker, and receiving a comprehensive analysis with color-coded feedback, a plagiarism percentage score, and options for editing the text.

Quetext is one of the best plagiarism checkers available with high-quality insights and accurate results.

Plagiarism Checker - 100% Free Plag Detector Online

• Research Paper
• Custom Writing

While working on a paper, you might write a couple of sentences that seem suspiciously familiar. After a quick search, it turns out that an excerpt appears somewhere else online.

Whether on accident or not, this will be considered plagiarism . Fortunately, there is an instrument that can be of great help in such cases!

An online plagiarism checker (for 2000 words & more) is designed to analyze the content of your papers and compare it to other publications. It will assist you in making sure that all of your information is original and properly cited.

Above, you can try our plagiarism detection tool for free!

In this article, our team has explored the concept of plagiarism, explaining its common types and how to avoid it. And in case you are looking for more options, we have also provided a list of alternative software that you can use in your work.

• 🤔 Causes of Plagiarism

✏️ Common Types of Plagiarism

• 🔍 How to Avoid Plagiarism

💯 12 Online Plagiarism Checkers

🔗 references, 🤔 why use a plagiarism checker.

The issues of plagiarism and academic dishonesty become more and more relevant each year. According to some research , 92% of surveyed students stated that they had or knew someone who had cheated .

So, why does this happen?

The researchers have shed light on this phenomenon, and here are some of their statistics:

• 92% of those who plagiarized stated that they did so because they wanted better grades.
• 83% said that they cheated because of procrastination.
• 75% of respondents pointed out that they did not have enough time to finish their assignments.
• 33% have attempted to cheat due to their overloaded class schedule.
• 58% of the surveyed have plagiarized because they lacked an understanding of the subject.
• 50% had little or no interest in the subject.
• 25% of participants believe that anyone can cheat without any consequences.
• 17% of the interviewees cheated because of peer pressure.
• Another 17% think that it does not matter to the professor if their paper is plagiarized.

After taking all of these numbers into account, it is evident that a significant percentage of students commit acts of plagiarism for several main reasons. Among them are poor time management, concern for academic performance, and peer pressure.

Now that you know the causes of plagiarism, it will be beneficial to examine its different types. Generally, these can be divided into two groups: unintentional and intentional.

Intentional Plagiarism

When it comes to intentional plagiarism, it doesn’t necessarily mean that your paper copies the full document written by someone else. This is only one example of cheating out of many others.

Unintentional Plagiarism

Meanwhile, unintentional plagiarism may refer to:

• Forgetting to cite a source when describing something that is not common knowledge.
• Not citing information that you have paraphrased or summarized.
• Failing to use a proper citation style when documenting sources.
• Misquoting an author, even if it is appropriately cited in the paper.

When composing your paper, it is important to stay vigilant. This is why it is handy to utilize the help of our plagiarism checker (2000 words). Free detection software is a quick and easy way to confirm your paper’s originality.

🔍 How to Check for Plagiarism

As you work on your paper, you may start to ask yourself: How can I avoid plagiarism altogether?

Below, we have prepared some tips that will help you write a 100% original essay:

• Regulate your time. As mentioned earlier, procrastination and a full class schedule may lead to plagiarism. To stay on top of everything, don’t put off urgent tasks until tomorrow. Read up on time management techniques and figure out an efficient study method that works for you.
• Cite while you write. Get in the habit of citing sources in full as you write your paper. Firstly, doing this will save you plenty of time for putting together a bibliography. Second, it will significantly decrease the risk of an improper citation.
• Use only trusted sources. There are a lot of websites with questionable content. Even documents that seem scholarly at first could turn out to be another student’s paper. Ascertain that you understand the source and the ideas that it is trying to convey.
• Understand the difference between various citation styles. An improper citation may result in a penalty for plagiarism. So, make sure you rely on a high-quality reference guide and implement the correct style. Don’t forget to add quotation marks when using unchanged phrasing from the source.
• Use plagiarism scanners before you submit your paper. Even if you wrote your piece from scratch, we still advise you to double-check it. From time to time, you might unintentionally “borrow” a couple of phrases that appear in other works. Despite it being an accident, your professor might penalize your paper. To avoid this, you can use one of the online free plagiarism detectors.

Perhaps our free plagiarism checker (2000 words & more) wasn’t exactly what you were looking for. If you find yourself in need of a tool with slightly different features, this section is for you!

Below, we have prepared a list of 12 online plagiarism scanners , both chargeable and free. They will allow you to avoid similarities with other works on the Internet.

Scribbr is a plagiarism checker powered by Turnitin, a plagiarism-detection system used by most universities. Therefore, it is an excellent choice for those seeking access to Turnitin but not being able to get it. Scribbr offers a free version, but it only allows you to see whether your paper contains potential plagiarism. To see a full report, you have to go premium, which starts from $19.95 per document.

2. Grammarly

Grammarly is famous for its superior grammar-checking software. However, with a paid version, you’ll also get access to its plagiarism detector. It can check your paper against billions of web pages, but its detection doesn’t cover gated and academic content. It also fails to identify rephrased content.

3. PlagScan

PlagScan is an outstanding plagiarism detection tool that is useful for students and writers alike. The website compares your paper against web sources, journals, and internal repositories. It doesn’t offer a free plan, but it allows you to check your first 2,000 words without charge during your free trial.

4. PaperRater

PaperRater is another plagiarism detection service. It operates as freemium software and provides you with a free report. The chargeable version allows you to get a printed summary of your results that contains more detailed information. This program is also integrated with a proofreader and supports various file types for upload.

5. Plagiarisma

Plagiarisma is a simple and free tool for students to use. It works with Google, Yahoo, Bing, and Scholar databases. Don’t forget to register to check your paper!

6. Dupli Checker

At first glance, Dupli Checker is similar to those mentioned above. However, this website has extra features, such as a text spinner, spell checker, word counter, etc. Of course, it also detects plagiarism and provides you with stats, links to plagiarized URLs, and highlights of related phrases. Did we mention that it’s free?

Viper , also known as ScanMyEssay, is a plagiarism detector supporting 56 languages. It checks your content against over 10 billion sources and can scan multiple files at once. Viper offers a free trial, allowing you to check one document of up to 5,000 words. It’s a good option for students who need to scan their papers for plagiarism occasionally.

8. PlagAware

PlagAware offers high-quality plagiarism detection and checks your papers against over 70 billion sources! It has a free plan that allows you to scan 10 pages per month. Moreover, if you choose a premium plan, you pay only for the first check of every document, while subsequent scans of the revised versions are free.

9. Copyscape

Copyscape is a plagiarism detector that can check your paper against online sources and web pages. It doesn’t check your content against academic databases, books, scholarly journals, and offline sources. So, it’s suitable for online content creators and website owners, while students seeking to check academic writing should opt for something else.

10. Copyleaks

Copyleaks offers both free and paid accounts to its users. In both cases, you have to register to use this service. If you have a free account, you can upload up to 2,500 words per month and use two checks. You will also see the history of your previous plagiarism scans.

11. Quetext

Quetext is a user-friendly plagiarism checker that allows you to edit text directly within the tool and has a useful feature — a citation assistant. However, you can check only 500 words with their free plan. After exhausting this limit, you have to go premium. It can also fail to identify plagiarism from scholarly sources like student dissertations or journal articles.

12. SmallSEOTools

The last paper plagiarism checker tool in our list, SmallSEOTools , allows you to check up to 1000 words per search for free. The amazing thing about this tool is that it’s available in English, Chinese, Russian, Italian, French, Portuguese, Spanish, German, and Japanese languages.

Remember – for students, getting caught plagiarizing may mean a failing grade, suspension, or even expulsion. For professionals, the stakes are even higher. Therefore, make sure to use our plagiarism checker for 100% accurate results!

Updated: Dec 19th, 2023

• Academic Dishonesty Definition and Types – Northern Illinois University
• Why do postgraduate students commit plagiarism? An empirical study - Apatsa Selemani, International Journal for Educational Integrity
• Unintentional Plagiarism: Is It Avoidable? – University of Houston
• Citing Sources – Holy Family University
• The Common Types of Plagiarism – Bowdoin College
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This page contains materials that are going to help students to get rid of their true nemesis—plagiarism. And it doesn’t just provide reviews and links to best plagiarism checker tools. It’s going to tell about causes and common types of plagiarism, and how to avoid it.

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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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• Sentence wise results
• Matched Sources
• Save Report Download Report

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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.

Our Customers Feedback

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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Turnitin for Research & Publication

Everything you need to publish with confidence

Most complete database of scholarly work

Compare work against premier content from Open Access Journals and top publishers like Elsevier, Springer Nature, Wiley, Taylor & Francis, and IEEE.

Flexible exclusions for rigorous checking

Add efficiency to the manuscript review process with customizable exclusion options that let you evaluate only the most critical matches.

Streamline reviews & collaboration

Work with peers and advisers easily to review and revise submissions using a simple system of folders and folder sharing.

Safeguard your institution's reputation

Identify text similarities early in a high-stakes publication process so the quality of your manuscripts maintains your institution’s reputation.

The #1 plagiarism checker, trusted by researchers & publishers

iThenticate

This high-stakes plagiarism checking tool is the gold standard for academic researchers and publishers.

Used by leading academic publishers

Catch missing citations before you turn it in

• Check your paper up to 3x faster than before with the new CitationMachine® Plus

More writing help from start to finish

• Expert Check

Check for unintentional plagiarism

Scan your paper the way your teacher would to catch unintentional plagiarism. Then, easily add the right citation.

Strengthen your writing

Give your paper an in-depth check. Receive feedback within 24 hours from writing experts on your paper's main idea, structure, conclusion, and more.

Find and fix grammar errors

Don't give up sweet paper points for small mistakes. Our algorithms flag grammar and writing issues and provide smart suggestions.

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"The plagiarism checker is super helpful for finding the places where citations belong within a paper."

- Heather B.

"The grammar checker is definitely better than any program I have used."

- Melissa D.

How we'll help you improve your paper

All-in-One grammar and plagiarism checker

The only thing harder than writing a paper is editing it. Nobody’s perfect, and grammatical errors are all too easy to make. But a grammar checker could help! That’s where Citation Machine Plus comes in: a one-stop shop that pairs a top-notch plagiarism checker with a complete grammar check. It’s the perfect companion for any student. Whether you’re an expert writer who just needs a second look or could use a full-fledged crash course on brushing up your writing, we’ve got it covered.

We offer smart technology you can access day or night, for all your last-minute deadlines. Citation Machine Plus’s built-in tools can help ensure you didn’t accidentally use someone else’s words without referencing them. If it does find an issue, you can use its citing tools to quickly create a citation for it.

To power up your paper even more, our tools offer an easy spelling check and the best grammar checker we’ve ever built. Our powerful software will run a quick grammar check and spell check to catch big and little mistakes on your paper.

We think Citation Machine Plus is the best grammar checker for a fast grammar analysis and spell check to catch things you may have missed! Whether it’s an issue with subject-verb agreement, a fragmented sentence, a dangling modifier, incorrect usage of an interjection or adverb , or just a grievously misused comma, our software hunts down and points out those easy-to-correct mistakes. Plus, our program includes a reliable spell checker to help catch and correct any typos.

The only question is: What are you waiting for?

Try Citation Machine Plus and get a free grammar check for your paper, scan your paper for text that may need a citation, and rest easier knowing your paper’s had an extra review before your teacher sees it.

Plagiarism matters more than you think

You might define plagiarism as copying someone else’s work , whether by copying another student’s paper or taking passages directly from research sources and passing them off as your own work. But did you know that it’s not just about literal copying, but about making sure you credit your sources.

Think about it: would you want someone to take your hard work without crediting you? Of course not! So it’s important to make sure that you don’t accidentally use the work and research of someone else without giving them the credit they deserve and that formatting requires. A plagiarism check provides you with peace of mind that you haven’t forgotten to cite sources.

A paper check for peace of mind

Plagiarizing the works of another writer is a big deal in school and in life. Even if it’s a mistake, it’s the sort of mistake that no one wants to make because it’s a pretty serious issue. Luckily, it’s pretty easy to avoid if you have the right tools at your disposal! The first step to avoiding it is knowing what it is.

One plagiarism definition — probably the most commonly discussed one — is to directly steal somebody else’s words and pretend they are yours, or, alternately, to use someone else’s words and not give them credit. These actions are deliberate attempts to deceive, and they do happen in real life. More often, however, issues arise from not from intentional misconduct, but from innocent or careless mistakes that simply give an impression of copying because sources haven’t been credited as they should.

Most teachers ask you to cite the works of others so you learn to be an ethical researcher who does not plagiarize . In many cases, teachers will use a plagiarism tool to make sure students are following guidelines. However, with so many assignments, chores, friends, and other parts of life going on, it can be difficult to keep track of everything.

That’s why getting a plagiarism check — like the one from Citation Machine — can save you from forgetting to cite sources. It’s simple to use, catching missed citations and other errors. Finding and correcting these problems before you turn in your paper can make the difference between a stellar grade and a failing one.

Still not sure about it? Try our essay checker with Citation Machine Plus for free. Simply copy and paste or upload a paper into our tool and immediately get a grammar check!

Snag an intelligent paper check

Personalized writing suggestions at your fingertips? Yes, the dream is real, and it’s right here at your fingertips, thanks to the easy-to-use Citation Machine Plus paper checker. But that’s far from the only thing it can help you with.

Why wear out your own tired eyes after you’ve already researched, written, and proofread that long essay or term paper? Even the most attentive student might miss a minor detail or in-text citation when reviewing their own paper. Instead, use our software to check your paper and catch missed citations or accidentally copied passages of text before you turn it in. With Citation Machine Plus, a smart plagiarism check is only a few clicks away, allowing you to catch missed citations or accidentally copied text.

So why not try it out? It’s free to scan a paper and can help catch those pesky errors hiding in your text, even if it’s as simple as a quick fix of a  pronoun or a missing preposition . And with an affordable subscription plan, you can upgrade and unlock all of our powerful writing and citing tools.

How a plagiarism check helps you

We often think of citing sources to avoid plagiarizing as something that helps other people, because it’s focused on correctly crediting the work done by others and not passing it off as your own or accidentally implying that it’s your own by failing to cite sources. But using a plagiarism checker to do this actually benefits you, the student, too!

When you submit your paper to be double-checked and to make sure that you haven’t plagiarized in any way, you’re also protecting yourself. How does that work? It’s all based on the way these tools function in the first place. Most of them are built around algorithms that compare uploaded papers to a vast database of existing work. This may include research databases of published works (think papers in academic journals, books, newspapers, and other print and digital sources), as well as information found online on websites.

So when you submit to a free plagiarism checker — or a subscription-based one — you’re comparing your own writing to other writings online. Your essay is checked using algorithms. How does this help you? In short, it protects you from accidentally getting a reputation as a plagiarist. Once you’ve uploaded a paper, the checker will scan your writing to make sure that your writing is wholly your own, saving you plenty of headaches and ensuring that your original ideas are shining through clearly with support from sources, rather than borrowing too heavily from other research.

If that’s not reason enough to use a checker, then remember this: if you’re in any sort of formal writing class, whether in high school or in college, your teacher is very likely to have access to a checker through their department. “Check paper for plagiarism” is at the top of the to-do list when teachers sit down to grade papers — in fact, many have a rubric that has a section for academic honesty and proper citations.

Since your teachers are already using this kind of software, wouldn’t it be great if you could too? The great news is you can! A Citation Machine Plus subscription gives you access to a set of tools built specifically for students, allowing you to check your paper on your own, before even submitting your work for grading. The more you check on your own, the more you learn, which can help you avoid making mistakes in the future.

But that’s not all.

So, what is plagiarism?

Let’s start with the basics. You might be surprised about what really counts in the overall plagiarism definition. For instance, have you ever heard of incremental plagiarism? Also called “patchwork,”  this happens when you take bits and pieces from multiple sources, without citing, and pass it off as your own work. This is common with specific turns of phrase or ideas, but it’s also what can happen if you aren’t careful with citing all sources. A paper-checking service can help catch these issues before they get to your teacher’s desk.

When we talk about plagiarism, we’re talking about a wide variety of issues. It can mean deliberately copying from another source, whether it’s a book, an academic paper, or the work of a classmate or previous student. Using services that do work on behalf of a student, then put the student’s name on it, also falls into this category. As described above, deliberate incremental plagiarism — usually plagiarizing multiple sources and combining them to avoid detection — is also a major problem.

The above examples are probably the first answers that come to mind in response to the question “what is plagiarism?”, but there’s actually a lot more to it than that. Most of us wouldn’t intentionally plagiarize, but there are plenty of instances where you might do so without even realizing that you’ve done something wrong!

For instance, forgetting to cite a quoted source might result in the quoted passage tripping the algorithms when your teacher runs it through a paper checker. Or perhaps you’ve synthesized the information from your research, but you’ve inadvertently reused some particularly distinctive language from one of the original sources, making it appear like intentionally copied text even though it’s really not. Citation Machine Plus tools can help you avoid these accidents by proofreading your paper to catch any instances that could count against you and helping you fix the issues.

Here’s a detailed article if you’d like to learn more about avoiding plagiarism .

Why we cite

What do teachers want to see in your papers? When it comes to writing style, teachers will pretty much always understand that every student will have a different voice, but they’ll still be looking for certain elements that every paper should have — like citations. Essentially, the idea is to make sure that an essay has original ideas and arguments and cites sources where it uses existing information .

Remember the Golden Rule? Do unto others as they would do unto you? Most of us would not want others to take credit for our ideas, so we don’t intentionally steal someone else’s words. But with so much information in the world, it can easily occur by accident.

Unfortunately, it happens both intentionally and unintentionally enough that teachers often take student work and run it through a scan to make sure the content is original. That’s right, even teachers sometimes use online tools from a subscription-based or free plagiarism checker. It’s even a required step for many writing classes at any level, so make sure that your paper is prepared for these kinds of checks.

That being said, no teacher really wants to flag any student’s paper, and no student wants to be flagged. That’s one reason citations are so important and a vital part of ethical research and writing. When you cite your sources correctly, you’re giving credit to the originators of the ideas or quotes, which means that there’s no plagiarizing going on — just good old-fashioned research .

When you first start learning to cite your sources, you probably learned just one overall style guide. In college and in the real world, though, the style guide you’ll need to use will depend on what field you’re in. For instance, academia often sticks with Chicago citation style , while the arts and humanities tend to prefer MLA, and APA is favored by the social and behavioral sciences.

So you need MLA format help? We got you covered! How about APA format instead? No problem! We’re all over that, too! In fact, we have many more citation styles . Our classic citation tools are available for all your formatting needs.

Here’s the best part: using our tools could help you expand your knowledge for the future! Our citation formatting tools can help you become more familiar with the most popular style guides — which will make your life easier when you go to write more essays in the future! Curious about these benefits and how it works? Here’s a great place to

Citation Machine Plus: More than a plagiarism tool

Citation Machine Plus is much, much more than just a way to check plagiarism — you can scan for grammar errors, too!

Unsure if you could benefit from a Citation Machine Plus subscription? Submit your paper for a grammar and spell check with up to 5 suggestion cards for free. A simple copy and paste or paper upload, a few clicks, and it’ll start reviewing your paper. Is an adjective used incorrectly? Is a determiner in the wrong spot?

That’s where the all-in-one Citation Machine grammar checker and spell checker comes in! With this simple but powerful software, writing can be scanned for grammar mistakes. Some of the most common errors are actually some of the simplest to fix. Even better: as you learn, you’ll make fewer and fewer of them.

The tool will highlight any errors, plus more! In fact, the tool can sometimes even tell you why your mistakes are mistakes and help you correct them. That’s why we think our grammar check is the perfect helper for your papers: it doesn’t just help to catch your errors, it also helps you learn from them so that you can improve your writing over time.

Hypothetical situation (or is it?): You have just finished writing a paper for class. Maybe you spent hours writing it, maybe you only spent an hour on it. Either way, wouldn’t you feel better turning in your paper if it was proofread and reviewed?

Everybody wants an A+. The only way to get there is through practice, hard work, and learning. Citation Machine Plus writing tools can help you develop your skills by identifying potential errors in your paper. That way you can improve your paper and learn what grammatical points to focus on in the future.

Help with formatting

As it’s more than just an essay checker, the Citation Machine Plus suite of tools has a few more tricks up its sleeve! As the name implies, these tools are built for equipping you with simple, easy-to-use citation tools to help you build a bibliography for your paper.

Citation Machine Plus: Your go-to writing source

So now’s the time to stop stressing over writing errors, accidentally plagiarizing others, and citation concerns. Let Citation Machine Plus help you write well! It’s the writing companion that can help to take your academic writing to the next level, and it will give you tools you need to become a better  writer both in and out of academic contexts.

Turning in essays for class can be stressful enough on its own, but that stress can just get compounded with worries about grammar and citations. There’s no need to stress when Citation Machine Plus is at your disposal! Its tools are easy to use, all-in-one platform that helps take the worry out of writing a paper when it comes to grammar and citations. Check for everything you need, all in one place, and learn more about how to make your writing truly shine.

Whether you need a quick check of your conjunction , noun , or verb usage, a complete grammar check, a thorough plagiarism tool, or reliable help citing sources, invest in a subscription to what we believe to be one of the most user-friendly citation tools online—Citation Machine Plus!

Easy citation creation

Let’s be honest, citations are a hassle. But the great thing about a paid or free online plagiarism checker is that you can pull double duty: when you check for plagiarism, you’re also checking to see if you’ve left out any citations! We wanted students and authors to have a one-stop shop when it comes to citing; a citation creation tool at your beck and call.

And now you do!

In addition to our paper checking tools, we have citation tools! Citing sources not only makes your work more professional, it is generally required for any formal papers or research projects. Any time you use the words or direct concepts of others, it’s vital to give credit where it’s due, and a proper citation is the means to do that. Remember: when we ask “what is plagiarism?” the answer includes improperly cited sources along with intentional copying! Teachers can often use a paper-checking service through their schools, so we’ve developed similar tools for students to use.

Our classic citation tools make it easy to create a correctly-formatted citation for APA format or MLA format citation styles. ** We have taken the hassle out of citing your sources, and — trust us — you will notice the difference.

** The APA and MLA are not associated with Citation Machine, but our citation services follow their styles.

Prevent plagiarism, run a free plagiarism check.

• Knowledge Base

Best Plagiarism Checkers of 2023 Compared

Published on June 7, 2023 by Koen Driessen .

The best plagiarism checker should be able to detect plagiarism the most accurately, even if the original phrasing has been altered. The tool should also provide a clear, comprehensive plagiarism report.

To identify which plagiarism checker is best, we conducted in-depth research comparing the performance of 10 checkers. We uploaded plagiarized texts that were either directly copied and pasted or edited to varying degrees. In total, we used 140 sources to construct our test documents.

Overview of total scores per plagiarism checker, based on the amount of detected plagiarism:

Table of contents

Our process for comparing checkers, 1. scribbr review , 2. plagaware review, 3. quetext review, 4. viper review, 5. grammarly review, 6. plagiarism detector review, 7. copyleaks review, 8. smodin review, 9. compilatio review, 10. writer review, frequently asked questions about plagiarism checkers.

In order to find the best plagiarism checker, we analyzed different aspects of the tools, focusing on both depth and breadth.

We based our analysis on the following factors:

• Access to the biggest and most varied database
• Ability to detect the most plagiarism for the most source types
• Ability to detect plagiarism when the plagiarized texts have been paraphrased
• Highest quality of matches
• Level of user-friendliness and trustworthiness

We used the same test documents, test date (April/May 2023), evaluation criteria, and data analysis for each tool in order to objectively compare the plagiarism results side by side. This ensured that the results required very little interpretation on our part.

Also see our list of the best free plagiarism checkers and the best AI detectors .

“Catches plagiarism more accurately than any other checker”

• Finds the most plagiarism and works for edited texts, too
• Does not store or sell documents
• Offers a happiness guarantee and live support
• Offers a Self-Plagiarism Checker to check for self-plagiarism
• Offers a limited free version
• Quality comes at a price
• Cannot work directly in the tool

Quality of matches

Scribbr performed well for all source types relevant to students, such as journal articles and dissertations.

Most importantly, Scribbr’s checker was the most successful at detecting plagiarism in source texts that had been heavily edited to mimic accidental paraphrasing plagiarism.

Scribbr was also able to find full matches. This means the entire plagiarized portion is matched correctly to just one source, rather than multiple incorrect sources.

The results are presented in a clear, downloadable overview. Different colors are used for different sources, making it easy for users to assess each plagiarism issue separately.

Issues can be fixed with Scribbr’s free citation generator , which generates proper citations for any missed or improperly cited sources.

Users can also choose to combine the Plagiarism Checker with the Self-Plagiarism Checker , which is unique to Scribbr. This tool allows users to upload their own unpublished documents in addition to the public database.

Instead of requiring users to subscribe to their services, Scribbr charges per plagiarism check ($19.95–$39.95, depending on the word count).

However, users are unable to work directly in the tool, and it is not possible to re-check your document for free.

Trustworthiness

Scribbr does not store the uploaded documents, sell them to third parties, or share them with academic institutions. Data is automatically deleted after 30 days, or students can opt to manually delete their document after the check.

Scribbr has live and responsive customer support to assist students in multiple languages. There is easy access to a plagiarism checker guide and other free resources about plagiarism.

Scribbr also has a happiness guarantee, where students receive a new check or refund if they aren’t satisfied for any reason.

Try Scribbr’s Plagiarism Checker now

• Detects most of the plagiarism
• Documents not stored in database
• Multiple support options, but no live support
• Difficult to read PDF reports
• Does not work well for scholarly sources

Plagaware was often able to find full matches and attribute the text to the correct source. However, it performed poorly with heavily edited texts.

Sometimes, the tool did not correctly distinguish between separate plagiarized sources (i.e., it incorrectly attributed two consecutive paragraphs to the same source).

The website report is easy to navigate as it uses different colors for sources. The tool has a function that tells you how many words a plagiarized section has and gives a similarity percentage.

Unfortunately, the downloadable report is confusing to read as it uses only one color and doesn’t clearly link plagiarized text with a source.

Plagaware does not store files and does not sell uploaded content. Their website contains a contact form and phone number.

Discover Plagaware’s plagiarism checker

• Users can work directly in the tool
• Offers a citation assistant that helps with adding missing citations
• Partial matches where one source text is matched to multiple sources
• Reports are hard to read

Quetext detected about half the plagiarized text but was often unable to fully match the entire source text to one source. Instead, individual sentences get attributed to different sources.

The website states that Quetext checks against webpages and academic sources, but the tool does not in fact perform well for academic sources.

The website report sometimes did not correctly distinguish between plagiarized paragraphs and attributed them to the same source.

Quetext differentiates by severity of plagiarism in its online report: orange for partial matches and red for full matches. Otherwise, the same colors are used for different sources.

Users can work directly in the tool, and Quetext offers a citation assistant that helps generate the missing citations.

The original layout of the text is lost in both the website report and the downloadable report.

The tool does not store or re-upload your text, and it offers a help center with FAQs. There is no live support, but users can submit a help request on the website.

Discover Quetext’s plagiarism checker

• Ability to compare your newest document with previously uploaded documents
• Different colors for different source types
• Documents get published on external websites if you use the free version
• Performs poorly for scholarly sources
• Report can be hard to read, due to partial matches

Viper found about half of the plagiarism when the source text was directly copied or lightly edited, but it struggled to find plagiarism in moderately and heavily edited texts.

The tool had average performance for most source types but struggled specifically with scholarly source types such as journal articles and dissertations. This makes this tool less useful for students.

When Viper flagged plagiarism, it often matched the entire passage to one source. While the downloadable report was somewhat difficult to read, it helpfully uses different colors for different sources.

Viper also allows users to check their text against their own previously uploaded documents, which may help to catch instances of self-plagiarism.

Viper stores previous submissions and shows matches with those texts.

The tool does not sell your document if you use the paid version (prices start at $3.95 per 5,000 words). However, if you use the free version, the document is uploaded to an internal database. After three months, the text is published on an external website as an example for other students. This is not good if the content of your text is confidential.

Viper does not have live support, but there is a contact form on the website.

Discover Viper’s plagiarism checker

• Offers a language and citation assistant
• Does not sell or share documents with other parties
• Finds quite a low percentage of plagiarism
• 100,000 character limit (14,000–25,000 words)
• Same colors for different sources

Grammarly found a relatively low amount of plagiarism. It performed best with lightly edited texts. However, it scored below 50% in all other rounds of testing.

When it did find plagiarism, the tool was often able to find the right source. However, the matches were usually only partial and rarely included the entire plagiarized section.

The design is not very clear. As the tool is primarily used as a language checker, the plagiarism checker function is somewhat difficult to find. The tool uses the same color for all sources, making it hard to read.

The subscription comes with a language and style tool and offers a citation assistant that helps generate the missing citations. In addition, there is a 100,000 character limit for both the monthly plan ($30 per month) and the yearly plan ($12 per month).

Grammarly does not store, sell, or share documents with other parties.

There is a support page with tips, tutorials, and FAQs, and it is possible to submit a question via a form. However, there is no live support.

Discover Grammarly’s plagiarism checker

• Does not store or sell your document
• Difficult to find the plagiarized source in the report
• Same highlight colors for different sources
• Technical difficulties generating the report, and no live support

This tool had difficulty uploading the document for each round of testing (for the first round, it took over six hours to generate a report). It seems that Plagiarism Detector was unable to adequately process a document of this size, even though the document did not exceed their word limit of 25,000.

This tool was mostly only able to find partial matches, attributing individual sentences to one or more sources, rather than the entire section.

In the downloadable report, the format of the text is lost, making it hard to read. The list of sources is also difficult to cross-reference with the text above because the same colors are used for different sources.

Plagiarism Detector offers a rewrite tool to help resolve similarities, but the quality of this tool is questionable, and it does not help with the citation issues. You should resolve plagiarism by citing the relevant source, not by attempting to rewrite the text to disguise it.

Plagiarism Detector does not store or sell uploaded documents. There is no live support, but the website does offer a help request form.

Discover Plagiarism Detector’s plagiarism checker

• Text layout is kept intact in the online tool
• Difficult to read reports
• Performed poorly with academic sources
• Unclear data protection policy

Copyleaks performed relatively poorly with all source types. It lists multiple possible sources for flagged sentences. However, it was sometimes able to attribute an entire source block to the correct source.

The report distinguishes between text that is “identical” to a source, text that contains “minor changes,” and text that is “paraphrased.” However, its judgment is sometimes wrong.

The site report and downloadable report differed (the downloaded report flagged content that was not flagged on the site report). On the website report, the source information function did not always work correctly, so it was sometimes impossible to check the accuracy of the attributions.

The reports were also difficult to read, as they use the same color highlights for all sources. While the source formatting is maintained in the online tool, it is altered in the downloadable report.

Copyleaks claim that they “will never steal your work.” To permanently remove uploaded content from their database, users must contact customer support. The website has a chat option and a contact form.

Discover Copyleaks’ plagiarism checker

• Site has a citation generator
• Very low word limit
• Report is difficult to read
• Scans individual sentences rather than full texts

Smodin performed relatively poorly in all rounds of testing. While it got some sources correct, it struggled to get full matches and frequently attributed the same text to multiple different sources. It did particularly poorly with scholarly sources.

The tool has a very low limit of 2,000 words per scan.

Both the online report and the downloadable PDF report are difficult to read. The downloadable report displays the uploaded document, but it doesn’t highlight the text that it flags as plagiarized. Instead, below this, it includes the individual parts of the text that it recognizes as plagiarism.

However, it is difficult to read as the same text is repeated over and over again if multiple sources were found for it. The sources also do not seem to be in a logical order.

Their data protection policy suggests they can/might sell or repurpose uploaded content. There is no live support, but there is a contact form on the site.

Discover Smodin’s plagiarism checker

• You can use your credits for multiple documents
• Scans against other documents you have uploaded
• Doesn’t highlight the plagiarized parts in the text
• Hard to review and resolve instances of plagiarism

Compilatio was able to find a few of the plagiarized sources, but it struggled if the source text had been moderately or heavily edited. However, when it was able to identify a source, it was often correct.

It was not possible to determine how accurately Compilatio could match the source to a plagiarized source text, since the plagiarized parts were not highlighted. Instead, the report only shows the general area that matches the source. This may limit its helpfulness to users, since it’s hard to review and resolve potential instances of plagiarism.

As the report does not highlight the flagged text, it does not provide a good overview of the potential issues. Additionally, you cannot work in the tool, so it’s not possible to exclude similarities from the report.

The tool scans the text against other documents you have uploaded, which can help to avoid self-plagiarism.

Users can buy packages for 5,000 words for €3.99 (no $ value is available on the site), 25,000 words for €14.99, or 50,000 words for €24.99. These credits can be used for multiple documents and are valid for 12 months after purchase.

Compilatio does not share or sell submitted documents, and the documents are not used as comparison material for other users.

There is no live support available, but they do provide a helpdesk with FAQs and a request form.

Discover Compilatio’s plagiarism checker

• Part of a tool with many other useful functions
• Allows you to edit in the tool
• Text format is not altered
• Doesn’t find much plagiarism
• Doesn’t provide a downloadable report

Quality of matches 

This tool found very little plagiarism. It struggled particularly with scholarly sources like dissertations and academic journals.

It scans sentence by sentence, rather than whole paragraphs. As a result, the plagiarized text is often attributed to multiple sources, rather than just one.

The plagiarism checker function is part of a larger language tool that provides grammar and spelling checks. As the tool doesn’t display an overall plagiarism percentage, we couldn’t apply our normal testing methodology. 

The tool has a nice, clean design and was relatively easy to use. The format of the text remains intact, and you can work directly in the tool. However, it doesn’t provide a downloadable report, so you must work solely on the website.

Writer claims that its tool is secure and safe to use and that it won’t share your information with anybody. A detailed security policy is described on a separate page.

They provide a contact number and email address on the site, but no live support.

Discover Writer’s plagiarism checker

Go back to the best plagiarism checker

Plagiarism can be detected by your professor or readers if the tone, formatting, or style of your text is different in different parts of your paper, or if they’re familiar with the plagiarized source.

Many universities also use plagiarism detection software like Turnitin’s, which compares your text to a large database of other sources, flagging any similarities that come up.

It can be easier than you think to commit plagiarism by accident. Consider using a plagiarism checker prior to submitting your paper to ensure you haven’t missed any citations.

The accuracy depends on the plagiarism checker you use. Per our in-depth research , Scribbr is the most accurate plagiarism checker. Many free plagiarism checkers fail to detect all plagiarism or falsely flag text as plagiarism.

Plagiarism checkers work by using advanced database software to scan for matches between your text and existing texts. Their accuracy is determined by two factors: the algorithm (which recognizes the plagiarism) and the size of the database (with which your document is compared).

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 .

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.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.

Driessen, K. (2023, June 07). Best Plagiarism Checkers of 2023 Compared. Scribbr. Retrieved April 15, 2024, from https://www.scribbr.com/plagiarism/best-plagiarism-checker/

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