Best Free Plagiarism Checker Tools for students, Teachers and for Bloggers

Are you searching for the best free plagiarism checker and proofreader for your writings? If yes, this article will give information on Plagiarism, online Proofreading, and Grammar checker tools to pull your essays professionally.

Plagiarism is a significant problem on the internet. Due to blog creation and web development’s fast growth, most people are searching for natural methods to get an article.

Apart from that, they are copying other articles and posting their websites or blogs without permission for more traffic and growth.

Here Google is brilliant. The Google search engine Spiders and crawlers work very fast.

Best Free Plagiarism Checker Tools
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They detect copied content (plagiarised content) very fast. So you have to take care of your content not to get copied by others. Are you searching for free plagiarism checker tools? Let us know what the best plagiarism checker is?

What is Plagiarism?

Plagiarism is an act of Fraud. It includes taking or stealing others’ work, a person’s writing, conversation, song, or even idea and passing it off as your own. Just it is a part of cheating or similar imitation of previously published articles of another author’s content online without their permission.

How to check for Plagiarism?

I recommend that every blogger or existing blogger create a copyright page and keep the link at the footer side or any other visible places.

Create a new account on the DMCA (Digital Millennium Copyright Act) new account. Place the code on your blog. It starts working by scanning your pages and checking online about copy scrapers.

As a blogger, I am writing content regularly for my blogs by spending more time and Publishing 3 to 5 articles every week.

I know the pain of content theft. At the time of the beginning, RSS scrapers were stealing my content. I improved my WordPress security levels.

What is a Plagiarism Checker?

A plagiarism checker is a tool that helps us in checking the plagiarized content. By using the plagiarism checkers, you can check any document or some words of content to know whether it has been plagiarised by any chance. 

Once you paste your content in the plagiarism checker tool and hit enter, the tool will start searching all over the internet for the content, whether the same content is used elsewhere. While most of the tools check for similar content, some sensitive tools give out similar wordings too.

Once they searched the whole article, they will show all the plagiarised lines along with the sources. 

It is also an important thing to checking for plagiarism before publishing your newly written content. The chances are that any article written over 100 words may be plagiarised. Hence it is always good to hit the check plagiarism button before publishing. If you get non-unique sentences, you can quote them or rewrite them in your own words

What does a checker do?

Generally, a plagiarism checker searches all over the web for content that is similar to the content you put in the checker box. If it finds any content on the web which has similar wordings as in your content, then the checker concludes that the content in both cases is the same and displays it to you along with the link to the article. 

It searches individual sentences and phrases and checks for similarities. After checking all the sentences in the content, it will give the overall score of the plagiarised content.  

Benefits of using a plagiarism checker

While not having plagiarized content is crucial, there are some benefits of using plagiarism checkers other than manually checking over the web. 

  • You will get links to pages from which your content looks similar. 
  • You will get the overall percentage of the plagiarized content
  • Within no time, all the sentences will be plagiarism checked 
  • It helps you improve your paraphrasing or otherwise called content rewriting skills, which help complete your articles without any plagiarism.

Here I am introducing a few free Plagiarism checking tools to check your content, whether stolen or not. 

Best Free Plagiarism Checker Tools

Here is the best free plagiarism checker software for students to schollers.

1. Grammarly Plagiarism Checker

Grammarly is one of the best free online plagiarism checkers for students, content writers, bloggers, and teachers. It has excellent features like Punctuation correction, Proofreading, and Grammar checking. The service is perfect as a grammar checker, i.e., It checks the Grammar and spells of the total content.

It is the best plagiarism checker for students and teachers, making their writings/research papers plagiarism-free. When you click on any word on the Web page, it shows definitions and synonyms via Double-Clicks. 

Grammarly Proofreading and Grammar checking features are free to use. But The Plagiarism option is a paid option. Investing money in this plagiarism tool is an excellent option. It is worth it.

If you are not ready, you can use free options like proofreading and Grammar checking tools. No doubt, Grammarly is the best site for checking for plagiarism. It is an excellent free online plagiarism checker for students and freelance writers.

How to enable Plagiarism check in Grammarly? Simple. This feature is available in the premium version only. Choose the pack and get the service immediately. It is the best Plagiarism, checker and proofreader. You can check the Grammarly Review to know more features.

Pros and Cons of Grammarly:


  • Comes free with the Grammarly premium, so you don’t need to pay extra for plagiarism tools.
  • There is a massive database of 16billion+
  • The word limit is 150K which is higher than any other tool.


  • You can only use this tool for English.
  • You can not get this tool alone without a Grammarly tool.
  • The pricing is a bit high. 

 Pricing of Grammarly: 

The pricing of Grammarly starts from $11.66/month for annual users and $29.95/month for monthly users.

2. Small SEO Tools Plagiarism checker

Small SEO Tools Plagiarism checker
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Best plagiarism detected tool

It is an online free plagiarism checker tool from SmallSEOTools. No need to download any software to check the plagiarism. Just copy the original content and paste it into the box, then click on Check for Plagiarism. This anti-plagiarism software detects duplicated content and gives a comprehensive plagiarism report.  

Pros and Cons of


  • Easy to use tool
  • No need to download any software
  • The tool is entirely free for anyone.
  • You can also check the plagiarism by uploading the document in any format.
  • You can also check plagiarism through a web page URL


  • The limit of the content is 1000 words only
  • It is not much reliable for students
  • Can not compete with the other premium plagiarism services

Pricing: the tool is entirely free for anyone 

3. CopyScape

copyscape Plagiarism detection software
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Best plagiarism detection tool

CopyScape is an anti-plagiarism checking tool.  You must add your URL to check for plagiarism.  It is an excellent Duplicate Content Detection software and duplicate content checker. It is a must-have tool for freelancers and content managers. It has a paid version with other alert functions. It does not check any documents or files and allows only web articles. Copyscape is a free plagiarism scanner.

Pros and Cons of CopyScape


  • The tool is straightforward to use
  • It comes with useful features and good customer support.


  • Sometimes the results are not accurate. 
  • The pricing of premium plans is a bit high.
  • The free program does not have such features as premium

Pricing of CopyScape

Free to use. For the Premium version, the pricing of the tool starts from $4.95 for ten pages and for each additional page you need to pay $0.25

4. Viper Plagiarism Checker

viper plagiarism checker
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Viper Plagiarism Checker is a Free Plagiarism Checker from Viper Plagiarism Scanner. Viper is a free plagiarism checker, and it is the best alternative to Turnitin Plagiarism services (This is Premium Plagiarism Checker Service).

A viper is a Windows-based software. It is, therefore, necessary to download before you can use it. Viper scans the web looking for a document source to detect any copies or plagiarism.

Pros and Cons of Viper Plagiarism Checker


  • Best plagiarism tool for students and institutions
  • Prices are best for limited searches
  • You can request cash back for unused credits.


  • Prices are huge for more documents.
  • Not suitable for bloggers and webmasters.

Pricing of Viper Plagiarism Checker

there is no direct pricing or monthly plans. You can purchase credits which cost from $3.95 to $65.50.


unicheck plagiarism checker
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Unicheck has released its free version, which can now be tried out by any user with a stable internet connection. It is the best online plagiarism checker with a percentage.

The free plagiarism checkers allows scanning 500-word texts at no cost and receives interactive reports after checking is completed. The tool is simple-to-use and doesn’t require registration unless you check much longer books than the Unicheck free version allows. 

The free tool performs scans against the internet and highlights plagiarized passages. It is the best plagiarism checker online free.

Pros and Cons of UniCheck


  • It is a cloud-based tool
  • Easy to use and feature-rich
  • It supports all formats to upload and check the docs
  • You can download reports


  • Even though uncheck promotes itself as a free service, you need to pay for every paper checked, and it does not show you pricing until the last second.

Pricing of UniCheck

The pricing of the unicheck starts from 5$, and this varies with the number of papers you have selected 

6. PaperRater

paper rater plagiarism checker
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The PaperRater is a free online plagiarism checker tool that is best suitable for students and institutions. You can submit your papers for plagiarism check and get your plagiarism checked.  It is a FREE resource that utilizes Artificial Intelligence to improve writing. 

It is fast and easy to use the tool, and you can also use this tool for checking grammar and spelling checks. 

Pros and Cons of PaperRater


  • Best for students
  • Simple and easy to use
  • There is a free and also premium plan for those who need more content to check


  • It is not entirely free, and the open-plan does not have useful features
  • Limitations on the number of checks per month

Pricing of Paper Rater:

It is available in both free and premium versions. In the free version, there is a limitation in the maximum submission length. The premium version starts from $7.95 for 20 pages submission.

7. Turnitin

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Institutions and universities mostly use Turnitin. The students of institutions are also recommended to use this tool for institutional purposes. This tool is sold to institutions and businesses rather than the students. So if you wish your paper to be checked, you can request your institution to get the article checked. Turnitin is another best free online plagiarism checker for students and teachers.

Pros and Cons of Turnitin


  • Best and fast source for plagiarism checking
  • Best for teachers who need to check many pages of documents
  • Very essential for teachers and institutions.


  • Not sold for individuals or students
  • Need institution credentials for using 

Pricing of Turnitin

As Turnitin is only sold for institutions and organizations, individual users can not get or purchase Turnitin.

8. DupliChecker

Duplichecker plagiarism checker
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DupliChecker is another best website to check plagiarism. If you are searching for a free tool that gives you the best results for plagiarism, then the duplichecker is the perfect choice for you. This tool is free. And you can use it online without the need of downloading any software. 

You can check for plagiarism in duplichecker by copy-pasting the original content in the checker box and hitting the check plagiarism button.

Pros and Cons of Turnitin


  • The tool is entirely free
  • Easy to use
  • You can copy-paste to check the plagiarism
  • You can also check plagiarism through URL


  • You can only use it online
  • Only 50 scans a day

Pricing: The tool is entirely free for anyone

9. PrepostSEO Plagiarism Checker

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The PrepostSEO is an all in one SEO tool which also comprises the Plagiarism checker. This is one of the great tools and is also available for free. You can check the original content directly from the web page, and in the free plan you can search up to 1000 words and a monthly limit on the free plan in 500 searchers per month which is way more useful than any other tool. 

Pros and Cons of PrepostSEO tool


  • There is also a WordPress plugin available 
  • The comfortable and reliable tool even for free and paid plans
  • The free plan includes 500 free searches per month


  • On the paid plan, a search can only contain 5000 words. 
  • You can not download the reports. 

Pricing: The pricing of the plan starts from $10/month

10. WhiteSmoke Plagiarism Checker

WhiteSmoke is a grammar checking tool which also comes with a plagiarism checking tool. This is one of the plagiarism checking tools used by many customers around the world. 

It is using Natural-Language Processing (NLP) technology to improve your writing style. 

There are billions of web pages saved in the cache of the servers which are used in analyzing the web pages and also checking the grammar issues in the page.

The WhiteSmoke comes in next place after the Grammarly tool. This is the best site to check plagiarism of your documents with the best price on duplicate checks.

Pros and Cons of Whitesmoke plagiarism checker


  • Supported in multiple platforms like outlook and word. 
  • Can also be used for grammar and punctuations
  • It is compatible with all the devices


  • The pricing is more
  • You will only get 500 credits for any plan you need to buy additional credits 

Pricing: It is a Premium tool. There is no trial versions. To use the tool you need to buy credits

List of few best other sites

The list of plagiarism checking tools is unlimited. So there is no end of this list. We listed the few sites which are used personally. There are hundreds of best free plagiarism checkers available to check the uniqueness of the text. So let me provide some of the websites to find plagiarism for better reference.

Name of the ToolFeatures
1. Plagiarism DetectorFree and Pro versions available
1000 words limitation in free
useful for Student, academics, personal, professional and legal documentations
2. QueTextClean interface
contextual analysis and word placement
Suitable for Bloggers, webmasters and professionals
Registration required
3. SEReport’s Plagiarism checkerThe interface is similar to PrepostSEO tool.
Easy to use.
No need to register your details
4. PlagTrackerMost accurate premium plagiarism service
Free and Premium services are available
5. PlagScanIt helps you to check the authenticity of your text.
Best online plagiarism checker with percentage
6. CopyLeaksAI-based anti-plagiarism checker
Google Docs, MS Word and Moodle integration feature
LMS platform supportive
It is the best plagiarism checker for research papers
7. PlagiarismaBest plagiarism checker software with a simple interface
Desktop version available for windows 7 and 8 users
There is an android version for plagiarism check from your smartphone
8. PlagiumSimple to use interface
Google Doc extension is available
9. PlagAwareIt is a professional plagiarism suite for students and writers
Trial version is available
10. Scribbr Plagiarism checkerIt is a completely premium tool
No free version

Each tool has its unique features in their actions. In this page, I wrote ten best sites to check for plagiarism in detail for students, teachers and content writers. So pick the suitable means to make safe and unique documents and contents.

Best free online plagiarism checker for students and teachers

For Teachers and students, you may go with free plagiarism checking tools like PlagScan, CopyScan and Duplichecker. These plagiarism checking sites are perfect for educational institutes. If you need additional checking for the overall analysis of your student’s academic papers, write-ups, and essays, you can try the Grammarly Premium.

Popular tool to check academic papers and assignments
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A popular tool to check academic papers and assignments
WhiteSmoke Detect copied content
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Best tool to check academic papers

The premium version of Grammarly and WhiteMoke has more additional features to change the words, phases with their suggested synonyms to come up with unique and readable. It is the best free plagiarism checker for students. These are the best tools to check academic papers, which are free from plagiarism or not.

Frequently Asked Questions (FAQs)

  1. What is Plagiarism?

    The definition of plagiarism is “using other creativity as your own in the form of text and images”. It is considered to be cheating. It is not a traditional method. It is called Academic crime. 

  2. What is the best free plagiarism checker?

    There are thousands of plagiarism checker tools available in the market. Most of the tools will force you to buy the premium versions after a few free checks. For the Students, teachers and content writers you may use the free versions to come up with content uniqueness. Here I strongly suggest Grammarly and ProWritingAid Plagiarism checker tools.

  3. How does a plagiarism checker work?

    The plagiarism checker software works to identify the original content with similar matches by matching the crawled content and recognising others’ text components.

  4. Is it safe to use a plagiarism checker?

    According to terms of the data protection system, most of the plagiarism checkers free tools do not provide accurate information about their locations and content. 

Final Words

I would recommend these free online Plagiarism checker tools to check copied contents and act on content stealers. First, I suggest that every blogger create a copyright disclaimer page and open a new DMCA account to file complaints.

The above-listed Plagiarism checker websites have their pros and cons. So you should take it into consideration before you decide as per your professional needs.

I suggest the Grammarly Premium tool to get the best results for bloggers, content writers, and teachers. Naturally, it is the best plagiarism checkering and proofreader tool.

It is having more features like Proofreading and grammatical error rectification. So this is my favourite. Check Plagiarism Online for Free with the above tools.

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best plagiarism checker tools 2021

This article helps you make your original content, document, and research papers clean and unique by using the above Best Free Plagiarism Checker tools. But do not use all the tools once. Choose one tool and scan your documents or original content to check plagiarized or not. Share this document with your friends on social media.

Thank you

About Author

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Hi, I am Satish Ithamsetty, Full-time Blogger since 2009 and a tech enthusiast. The main motto of this blog is to help newbies to start their blogging as a business. So I love to write on Blogging, SEO, Making money online, YouTube, and Affiliate marketing. If you need any assistance, you can stay connected and join our Facebook Community to get industry-relevant updates and more.

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15 thoughts on “Best Free Plagiarism Checker Tools for students, Teachers and for Bloggers”

  1. Indeed plagiarism is sometimes a real threat, of getting our things copied or someone gets our ideas stolen and put it on the
    It’s good how Google acts smartly and catches those, who are willing to perform this act of thief.
    Some pretty helpful tools to check over plagiarism, I have used Grammarly and Copyscape and these two have helped me a
    lot in my journey this far.
    Thank you for this informative article.

  2. Hello Satish
    It’s really great information for everyone especially for creative ones like Bloggers. The world is really very competitive and to make your data safe is a big thing. You have given a great solution.

  3. Hello Satish,

    Great tips here 🙂

    Indeed plagiarism is sometimes a real threat, of getting our things copied or someone get our ideas stolen and put it on the

    Its good how Google acts smartly and catches those, who are willing to perform this act of thief.

    Some pretty helpful tools to check over the plagiarism, I have used Grammerly and Copyscape and these two have helped me a
    lot in my journey this far.

    I am looking forward to try some of these tools which I haven’t gone through with.

    Thanks for the share.


  4. Thanks for sharing this list of tools. Recently I faced a situation where a guest article is published in my blog which is a copy of other blog. I did not doubt about the author as he showed some expert proof. But latest on felt very bad, that I was not cross checked the content. This is a great learning and I have a leart a lot from this experience.

  5. Hello Satish,
    These tools are very good. I used ‘Grammarly’ for a long time, but unfortunately, I can admit that it’s good for checking grammar but not for plagiarism. I’ve tried a lot of good plagiarism checkers and some of them are really very nice and not so expensive.

    Thaks for sharing useful tools)

  6. Hi Satish ,

    Good to see a list of plagirism checking tools. I have been using Grammarly for long time and hence actually never tried to look for another one.

    Once again thanks for sharing valuable informations.

    Have a great time blogging.

    Reji Stephenson

  7. Hi,
    Thanks for sharing your content about Plagiarism checker tools. Currently, I’m using SmallSEO Tool for checking my guest content. I think, this tool is the best for me. Thanks, Satish Bro.

  8. Hi Satish,
    Yesterday I was using SmallSEO tools and it was not working that perfectly, so I was looking for some best alternates. So, thanks to you for coming up with this amazing post and sharing some more tools.

    • Hello robin,
      Thanks for landing here. I checked every tool before writing this article. May be some technical problems, the small SEO tool doesn’t working properly. Check with another tool. Grammarly premium plagiarism tool is working good.

  9. Useful information from you Mr. Satish Kumar !! Now a days Grammarly playing a lead role in grammar checker and as well as Plagiarism checker tool from Grammarly. But grammarly will good for premium too. There is no more use for free account users.

    Thanks for sharing !! Keep sharing

    • Hello Karthik,
      Plagiarism is a popular issue on the internet. Grammarly is a very good premium tool for everyone not only for bloggers and content writes. This is also helpful for students and teachers. No doubt this is the Worth tool for bloggers and content writers.


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