9 Best Plagiarism Checkers Of 2024 (Ranked & Reviewed)

Best Plagiarism Checkers

Writing is a part of many students and professionals around the world. It can be for academic purposes, business needs, or research work.

A writer has certain legal and ethical responsibilities, and they must produce original content.

To help writers like me produce original and quality content, I have curated the best plagiarism checkers for 2024.

Here comes the #1.

What Are The Best Plagiarism Checkers In 2024?

In the list of best plagiarism checkers, the first one comes is:

1. Grammarly

Grammarly can enhance your writing for free by using a grammar checker and plagiarism checker. It helps you find and fix grammar errors in your documents and web pages.

Grammarly official website

The free Grammarly plagiarism checker can tell if your content is plagiarized. It will also mention the percentage of plagiarized content found in your document.

Grammarly Premium offers a plagiarism checker that will also mention the paragraphs and sentences that need to change.

I had a document in a .txt file and pasted it into Grammarly. It not only caught plagiarism but also identified an improperly cited quotation. This was a great help in making sure my work is original.

The versatility of Grammarly is amazing when it comes to device compatibility. It easily supports devices like iOS, Android, mobile, and desktop.

I have had it logged into both my iPhone and PC. It well-suited my professional life, helping me with text editing, resume building, descriptions, and more.

This software goes through 16 Billion websites to check your plagiarism.Available only in English.
The accuracy of plagiarism and grammar check is top-notch.
Available on all devices. 

Grammarly Pricing:

Grammarly Pricing has set the standard high. The free version has basic writing suggestions and tone detection. Grammarly Premium costs $11 per month and has enhanced features, including rewrites and vocabulary suggestions.

The Business plan of Grammarly has features for team collaboration at $15.00 USD per member per month.

One thing I appreciate about Grammarly is that the plagiarism checker is included in the monthly subscription, so I don’t have to worry about extra costs based on the number of pages I check.

You can even use the Grammarly student discount if you are eligible for that.

2. Turnitin

Turnitin is a specialized software designed for educational institutions. Every document you submit to your teacher through Turnitin’s portal goes through a thorough scanning and checking process.

Turnitin Home Page

One important thing to know about Turnitin is that it goes beyond just detecting plagiarism. It has a unique scoring system for each piece it scans.

You can see a “similarity index,” which is a percentage score, and a detailed report on where the text has been taken from. These reports are then analyzed by the teachers so that they can mark the students accordingly.

You can use Turnitin as a student. It’s good that your paper runs through plagiarism detection software before submitting it. You can actually avoid being caught for copying text from other sources.

Read our article on Grammarly vs Turnitin to find out which one is the best for you.

Suits the structure of large organizations.Not available for most writers.
Best for college students and professors.
Check plagiarism before submitting your work.

Turnitin Pricing:

As for pricing details, you can easily contact the sales team by requesting a note through the official website.

A representative from Turnitin will contact you within 3 days of you sending the request, and they will provide you with the solution.

3. Writer

Writer is one of the most reliable sources that may help you in creating online content. Creating an original task is not an easy task.

Writer AI detector tools

You have to do a lot of research and edit the text. Originality in the text comes when you do not have plagiarism in it. Writer.com comes to rescue all the content writers. Even unintentional plagiarism is considered wrong.

All you have to do is run your content on Writet to check for plagiarism, and then you can proceed with publishing. 

It can be a challenge for a writer to find a reliable and free plagiarism checker tool that meets all your requirements.

But you do not have to worry about that because Writer provides options for both free and paid versions. The paid version of Writer has features like unlimited word count to keep you going. 

The Enterprise Plan on Writer guarantees that your content will always be unique and plagiarism-free. I have always used the Writer’s Style and Grammar Checker tools to improve the overall quality of my documents. 

Specifically, the Writer has been fully utilizing the AI techniques to grasp the context of your text. It offers better suggestions when compared to many other writing apps available online. Also, this software helps you maintain a certain tone and alignment.

Writer also provides one of the best AI content detector tools in the market.

While pricing for this plan is custom, you can easily reach out to the Writer’s sales team to get more details.

Affordable.It provides both free and paid versions of plagiarism checkers.
It provides both free and paid versions of plagiarism checkers
Provides accurate suggestions.

Writer Pricing:

There are two types of plans available on Writer.com. Firstly, we have a Team plan that costs $18 per user per month. Secondly, we have an Enterprise Plan, for which you will have to contact the Sales team.

I have also tried out their free trial for two weeks. You get everything in the free trial, like grammar checker, plagiarism checker, and unlimited word count.

4. ProWritingAid

ProWritingAid is my go-to tool for making sure my writing is as fantastic as it can be. It’s like having a personal editor and plagiarism checker on my PC.

ProWritingAid Home page

Thanks to this plagiarism checker, I was able to identify and fix problems as well as improve my writing style.

Its best quality is that ProWritingAid is more than just a basic plagiarism checker. It more closely resembles being a writing tutor for both amateurs and professionals.

It helps me choose better words and phrases, which enhances the readability and intrigue of my writing. It is comparable to having a supportive friend who serves as my writing coach.

During the writing of my latest book, I heavily relied on ProWritingAid’s plagiarism checker to scan book chapters for any missing quote citations.

I uploaded my MS Word document into the web app to initiate the plagiarism check. You have the flexibility to either copy and paste text or open writing documents directly from your computer.

One of the things I like the most is that you can access it from my web browser.

It also supports popular writing software like Word, Google Docs, and Scrivener. ProWritingAid has become a part of my writing process.

Good for beginners. Reporting an issue will take some time.
Simple user-interface. 
Can scan large documents for plagiarism.

ProWritingAid Pricing:

The free version has some limitations, and the paid version of this software costs $20 per month. To access the plagiarism checker, you’ll need to opt for their paid plan, which costs $70 per year.

Your potential savings for an annual subscription might be 67%. For lifelong access, I paid a one-time fee of $399.

5. Copyscape

If you’re someone like me who values originality and wants to ensure that your content is free from plagiarism, Copyscape is an excellent tool to consider.

Copyscape Home Page

This tool was founded by Gideon Greenspan in 2003. It has become a popular plagiarism detection service over the years.

Using Copyscape is simple. You can just put an article’s URL into Copyscape to quickly check if it matches any published web pages.

I often paste my writing into Copyscape to scan for accidental plagiarism. This helps me play safe while I publish articles online. 

I have personally used Copyscape as a plagiarism detection software for my website. Connecting it to my sitemap, I was dismayed to discover that another website had copied one of my online reviews.

Without delay, I contacted the offending site and requested the removal of the article. Unfortunately, when I received no response, I took the necessary steps by initiating a DMCA takedown request.

It supports most languages worldwide.Only accessible using your desktop or laptop.
Bases on Google and Bing for sources to check. 
This software has a PAYG pricing model. 

6. WhiteSmoke

If you’re on the hunt for an accurate plagiarism checker that is compatible with any device, then WhiteSmoke is here for you.

Whitesmoke official website

This software is not only a plagiarism checker, but there are a bunch of other features that enhance your writing skills. Let me share more of my insights about this tool.

WhiteSmoke comes with an accurate grammar checker and many other additional resources that also include helpful video tutorials. These resources are a goldmine for anyone aiming to improve their writing skills.

One aspect I particularly appreciate is its language support. WhiteSmoke supports a whopping 55 languages, making it a comprehensive choice for writers around the world.

It’s great to know that it covers the most popular languages that can help you when you are dealing internationally.

I have always preferred the web-based version to be quite convenient and user-friendly. However, WhiteSmoke also offers desktop and browser apps for those who prefer a different platform.

The desktop version has a 10,000-character restriction, which can be limiting when checking larger sections of text. I would recommend using the web version to check longer texts.

This software supports 55 languages. Bad customer support.
Video tutorials are available to improve text quality. 
Provides both websites and mobile applications. 

WhiteSmoke Pricing:

If you are on a tight budget, WhiteSmoke doesn’t offer a free option. However, considering the features it offers, the pricing starts as low as $6.59 per month (paid annually).

This makes WhiteSmoke one of the most cost-effective options available in the market.

Find the best Whitesmoke alternatives that match your writing style.

7. Duplichecker

Duplichecker offers a plagiarism-checking service for free. It makes it accessible for quick scans without the need to create an account.

Duplichecker Home Page

You can check up to 1,000 words by simply using the copy-paste method or uploading various file formats like MS Word or dot TXT.

I had to deal with some advertisements on the website because the free version is ad-supported. Later on, I finally decided to go with the paid version to remove ads and no word count limit.

It’s particularly useful for content publishers and online writers. And it has been amazing to have so many alternatives to Grammarly.

I tested Duplichecker by copying text from two published articles into the tool. The plagiarism report accurately identified issues with one article and provided the original URL.

However, in the second test, it didn’t recognize that the article was already published online.

So, the real question is if plagiarism checkers are 100% accurate. The answer is NO. Any plagiarism checker cannot be 100% accurate because it has to be checked from millions of published articles on the internet.

And this software might not be capable enough to do that. However, any plagiarism checker is ideally 80-90% accurate.

More than 90% accuracy of plagiarism.Not suitable for professionals.
The free version has advertisements. 
Many options are available for buying a subscription plan.

Duplichecker Pricing:

The pricing of Duplichecker varies from $5 per week to $2000 per year. There are many types of subscription plans available on Duplichecker’s official website.

Any of these plans may suit your preferences. You can choose whatever you feel is suitable for you.

8. Quillbot

Quillbot is one of the many software that I rely on for plagiarism checking. I have received a lot of assistance with academic plagiarism checking and publishing papers.

QuillBot Home Page

It’s like having a multitasking, intelligent helper that can help and enhance my writing.

Not only does Quillbot help with plagiarism checking, but it also helps in rephrasing sentences. After you have taken references from other articles, you may make a unique piece using inspiration from other sources.

It’s like having a writing partner who helps me express things in new ways, enhancing the variety and originality of my work.

I have been able to summarize a ton of content with the help of Quillbot. It is comparable to a magician who can make a long passage of text into a small summary.

The time and effort these features saved me was amazing. And finally, the plagiarism checker acts as the cherry on top, giving you a green signal to publish online.

My text has been grammar-checked by Quillbot. It also helps me to write clear and error-free content. This software is just like having a proofreader who never overlooks an error. It makes sure my work is unique and correctly credited by checking for plagiarism.

Quilbot is also compatible with Chrome, Microsoft Word, and Google Docs. This is an extremely adaptable instrument with a simple operation that fits everywhere.

My go-to tool for editing my writing is now Quillbot. It helps me create high-quality material and makes the writing process a lot more streamlined and effective. It’s like having a writing specialist on my team.

Read the Quillbot review to learn more about the tool and how you can use it to improve your content.

Can be a good citation manager. The page pricing model does not allow unlimited word count. 
Subscription plans are affordable. 
Discounts are available for 6 months and annual subscriptions. 

Quillbot Pricing:

However, it’s essential to note that Quillbot has a per-page pricing model. It works on a per-page basis, allowing you to check 20 pages with the monthly subscription that roughly amounts to about 5000 words.

If you exceed this limit, it costs $7.50 to check an additional 20 pages, which averages approximately 250 words per page.

If you have any questions, you can check my article on Quillbot vs Grammarly to find out which is best for you in 2024.

9. Scribrr

Scribbr is one of the best plagiarism checkers for students and content writers. You really do not have to worry about accidental plagiarism and the overall quality of your work.

Scribbr website

This software has a citation generator that makes academic writing a bit easier. However, it’s important to note that the grammar check feature is not as good as Grammarly.

This software significantly helps students in improving their academic writing and preventing unintentional plagiarism.

However, you must know that opinions about Scribbr vary among students. Some praise its effectiveness, while others may have differing views.

Scribbr is one of the best plagiarism checkers for students and content writers. You really do not have to worry about accidental plagiarism and the overall quality of your work.

Students must make sure that the school essays and assignments are plagiarism-free and have good overall quality. Ultimately, this software helps you get better grades.

User-friendly experiences.It has limited functionality.
A good replacement for Turnitin.

Scribrr Pricing:

Scribbr’s pricing is a bit complex. Let me explain this to you. A small document of up to 7,500 words costs $19.95.

If you have a standard-sized research paper ranging from 7,500 to 50,000 words, then it will cost you $29.95. Large assignments exceeding 50,000 words are priced at $39.95.

10. Plagiarismchecker.ai

Plagiarismchecker.ai is a unique AI plagiarism checker that will quickly identify and eliminate plagiarism from your content. 

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This tool quickly analyses the text and provides detailed results of plagiarism detection. The results include plagiarism percentages, highlighting plagiarized text, and the list of sources that were plagiarized. 

In addition to that, this tool also helps in removing plagiarism by automatically paraphrasing the plagiarized text and converting it to the original text. 

I uploaded a Word document on plagiarismchcekr.ai in which I intentionally did some plagiarism, and I was amazed by how precisely it detected the plagiarism. I even used the plagiarism remover option, which is equally amazing; it literally removes plagiarism in the blink of an eye. 

It is available online, and it is compatible with many devices, including laptops, PCs, iPhones, iPads, and Android phones. 

I have been using it recently to detect and remove plagiarism from my text, and I’m quite satisfied with the results. 

Pros Cons 
It helps in quick and easy plagiarism detection and removal. It is an online tool, you need the internet to use it. 
It provides a list of plagiarized sources so the user can cite them properly. It is not available for free. 
It can detect plagiarism in 25,000 words at a time. 
It is powered by AI technology and provides quick and precise results. 

Plagiarismchecker.ai Pricing:

It is not a free tool, but it is available at quite a reasonable rate. There are various subscriptions available, and the cheapest one costs $5 per month. The users get an AI-based deep plagiarism checker, a 10,000-word limit, and a plagiarism report. 

Another subscription option costs $10 per month with AI-based deep plagiarism checking, a 100,000-word limit, and a plagiarism report. 

Plagiarismchecker.ai’s development team is currently working on a new option for enterprises that will have the capacity to check plagiarism in 1 million words and in various languages. 

Why Should I Use a Plagiarism Checker?

You should use a plagiarism checker to make sure that the content you have written is free from any legal or ethical obligations.

It is important to use plagiarism checkers in all sorts of fields, like business content, professional writing, and academic papers. It is very unethical that you copy someone else’s work without giving credit.

This is a serious issue in academia and can lead to major problems. As an employee, you might get fired from your job, and you will have to face legal copyright issues. 

There are certain things to take care of when you write research papers or anything important.  It is important to do your research, organize your work well, and follow the guidelines.

Some people might find this process troublesome and use the copy-paste method. 

Also, plagiarism isn’t always intentional. It can happen because you didn’t know better, didn’t manage your time well, or weren’t clear on what plagiarism is.

Luckily, using a plagiarism checker can help avoid these issues:

  • Plagiarism checkers can find copied content from various sources, helping you ensure your work is original.
  • They point out exactly where you’ve copied, making it easy to fix and give credit where it’s due.
  • Plagiarism checkers tell you how much of your content matches other sources (in percentage), helping you see the extent of the issue.
  • They can identify content that’s been poorly rewritten, which is still considered plagiarism.
  • Using a plagiarism checker shows that you’re honest and committed to producing original work.
  • It’s a smart tool to ensure you’re on the right track and avoid unintentional plagiarism.

How Does Plagiarism Checker Work?

A plagiarism checker is like a detective that helps you find if some parts of your writing are too similar to existing content on the internet.

It uses a special method called an algorithm to scan the web and compare what you wrote with what’s already out there. It looks for specific phrases or sentences that are very similar to what’s already published.

When you use a plagiarism checker, it will show you a report with links to the places where it found similar content. This helps you see if you accidentally used someone else’s sentences without giving them credit.

Some plagiarism checkers go even deeper and scan academic journals, social media, and online archives to be more thorough.

You can find these plagiarism detectors online from different brands. Some let you try their services for free to check a small part of your work.

The premium version of this software does more in-depth checks and gives you detailed reports and scores to help you understand better.

But these usually cost money, either for each page or word you check or through a monthly subscription.

They work by checking your document in four different ways to ensure it’s original and doesn’t contain copied content.

What Are The Benefits Of Plagiarism Checker

Plagiarism checkers have greatly benefited my writing process in numerous ways. Below, I am mentioning the benefits of Plagiarism Checkers:


First of all, the speed and efficiency at which these tools operate are remarkable. As soon as I upload my work, it automatically checks for plagiarism thoroughly.

It saves me precious time and effort. Most of the plagiarism checkers take just one minute or less to show the results.

Get source links

Plagiarism checkers provide the sources of the text that help me verify and cross-reference the information.

This way, transparency is maintained by the software. Giving solid proof against accusations of plagiarism is also necessary because it can be confusing for you if you do not get to know where your text is copied from.

Percentage of Plagiarism

This software provides an accurate percentage of how much of your text is plagiarized. Let me tell you that it is fine if you have plagiarism of less than 10 percent.

This is because certain data cannot be changed. But if the plagiarism percentage is higher (let’s say 40% or 50%), then you need to work on your text.

Maintain Regulatory and Ethical Guidelines

Whether in academics or my writing profession, abiding by some rules and regulations is important for success.

Avoiding plagiarism is significant to say that my writing is ethical. This helps to save a writer’s reputation and showcases intellectual capabilities for creating original content.

What Are The Types of Plagiarism?

There are several types of plagiarism I know of, but four of them are the most significant ones that I am going to share with you.

Direct Plagiarism

Direct plagiarism is the simplest type of plagiarism.

It happens when you directly copy someone else’s work word-for-word without proper attribution or quotation marks. It is very unethical, and you might have to face some disciplinary actions.

Self Plagiarism

Self-plagiarism occurs when a person submits their own previous work or parts of it without obtaining permission, especially in different academic contexts.

This includes reusing content from previous assignments without appropriate authorization.

Mosaic Plagiarism

This is one of the most common forms of plagiarism that happens today.

Mosaic plagiarism involves using phrases from a source without using quotation marks or paraphrasing words while retaining the original structure and meaning of that phrase.

You can also refer to this as “patchwriting,” and it is academically dishonest, even if the source is cited. This happens mostly when someone is using paraphrasing tools to write their content.

You can save yourself from Direct plagiarism using paraphrasing tools, but spinner content can also be caught.

Accidental Plagiarism

Accidental plagiarism might break the heart of a writer. It happens when someone writes content using their own efforts, but that seems to be matching other sources on the internet.

A writer may unintentionally neglect to cite sources or misquotes. Certain definitions can be written uniquely, and it is hard for a writer to paraphrase.

This leads to content that closely resembles the original without proper attribution. Note that lack of intent does not excuse the act of plagiarism. This is why plagiarism checkers are very important to use.

Final Thoughts

Hopefully, this article on the Best Plagiarism Checker has helped you get to know why plagiarism checkers are important and how you should use them.

You can choose the software that suits your preferences when it comes to the subscription plan and user interface. So, Good Luck with your writing!

FAQs on Best Plagiarism Checkers

Is AI content good for SEO?

Google has stated that AI-created content doesn’t affect search rankings. If your content is useful, unique, and on-topic, you’re good to go. Google mostly cares more about how good your content is rather than how it’s made.

Which Online Plagiarism Check Is Available For Students?

Students need to check for plagiarism because they might fail a grade, get academic probation, or even worse. Fortunately, there is a tool that can help. Students can use Grammarly’s online plagiarism checker to avoid failing grades and academic issues. It helps ensure proper citations for non-original content.

What is the most accurate plagiarism checker?

Grammarly and Turnitin are the most accurate plagiarism checkers. Grammarly has advanced algorithms to check your writing for originality. On the other hand, Turnitin has an extensive database and thorough scanning that provides accuracy in detecting plagiarism. You can use any of them that you think is suitable for you. 

Which Plagiarism Checker Do Teachers Use?

Turnitin is a tool that helps teachers check for plagiarism. It helps them find out if someone has copied work and promotes honesty in the classroom. It is an extensive tool that has so many features in it, like submitting assignments and other academic uses. 

How can I avoid plagiarism in my content?

You can avoid plagiarism by making sure to keep a record of the sources you use, rephrase or quote them properly, give credit to the original authors within your text and in a list of references, and always check for plagiarism before handing in your work.

Which plagiarism checker is used by IIT?

Most IITs use Turnitin as a plagiarism detection software. It helps in an originality-checking service that examines students’ work for citation errors and other unethical acts.

Does Google penalize AI content?

Up until 2021, it was unsure if Google penalized AI-generated content. However, recent clarifications from Google indicate they don’t penalize AI content. In simple terms, having content created by AI won’t get you in trouble with Google. They emphasize good quality and relevance, regardless of whether the content is AI-generated or human-written.

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