11 Best Free Plagiarism Checker Websites for Bloggers (You Can’t Miss Them)

Plagiarism has been a pain in the ass for many content marketers and if proper care is not taken to prevent publishing copied contents on your prestigious blog then, I’m afraid, you won’t be on this for long.

The painful truth is that people are lazy these days. Just ask most people that claim to be freelance writers to write a short 500 words article on any topic, and they will go copy it from the internet and present it to you. Now, as someone who’s busy with so many other things, you might end up publishing such stolen pieces on your blog and what do you think might happen next?

Oh yea, you guessed it right!

You will start getting embarrassing emails from the original owner of the article asking you to take it down or I guess you already know.

However, the problem of plagiarism does not only surface when you outsource articles, if you’re someone that accept guest posts from other bloggers then chances are, some of the guest posts you often receive might not be original as well and having such articles on your site will only be sabotaging your SEO efforts thereby putting your blog on the line.

A survey carried out by the Psychological Record shows that 36% of undergraduates have admitted to plagiarizing written material.

Similar to publishing copied contents on your blog, someone might also copy your own articles and publish on their blog and as you already know, this can result to Google penalizing your site. It is therefore pertinent to always monitor your articles to ensure no one is copying you without proper permission and attribute.

Luckily, there is a good solution to this, the best thing is to always use plagiarism checker websites to figure out if you’re dealing with original contents or not. There are many of such tools on the internet today but, the problem is that many people are usually not able to afford such tools, that is why I’m writing this post for you.

Are you searching for free plagiarism detecting tools? Do you really desire to ensure every article that goes to your site is pure, immaculate and original?

Well, if you answered yes to the questions above then, search no more because you’re already in the right place.

What is Plagiarism?

what is plagiarism

Now, if you’ve been in the content marketing business for long, I bet you already know what plagiarism stands for. But in case you don’t, I will take a little time to explain.

Plagiarism simply means copying from other sources without giving any credit. It’s like cheating and taking someone else hard work to claim it as your own. Due to immense growth in website creation, more and more people are searching for easy ways to copy others content to get more traffic to their websites.

what is Plagiarism

Though Google search engine crawlers are smart enough to know which is copied and which is not, but you have to take care of your content not to get copied by others.

As a blogger who works online most of the time, it isn’t unusual to stumble upon my work published on websites that I never gave permission to reproduce my work. After all the painstaking effort put in especially in writing my web hosting review articles, it is annoying and frustrating to find my work being irresponsibly copied by other “writers” on other web hosting blogs. 

Plagiarism can simply be defined as the most “similar imitation” in which a particular work previously and originally done by an author is copied without the author’s knowledge or approval.

Plagiarism can simply be defined as the most “similar imitation” in which a particular work previously and originally done by an author is copied without the author’s knowledge or approval.

I recommend everyone who blogs to create a copyright page and place it on either footer or best visible places on their websites. This way if someone copies your content, you can ask DMCA or Google to remove that content from your websites, you can even take copyright infringement issues against them. So immediately start working on creating a copyright page for your blogs and websites.

Types of Plagiarism

It might interest you to know that plagiarism comes in two forms namely: Intentional and unintentional plagiarism.

  • Intentional Plagiarism: This is a case where someone intentionally copied your content in other words, he did it consciously. This is what most cheap freelance writers often do. Article spinners and newbie bloggers that know nothing about the various laws guiding the internet are also victims of this.
  • Unintentional Plagiarism: In this type, the copied content is done without you being aware of it. This can usually happen when you’re writing and there happen to be traces of some sentences similar to what you have on your content. Also, it can be detected when you quote someone else work without giving proper attribution and credit.

In either case, you’ve committed plagiarism and will face the consequence is nothing is done about it.

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Why Use Plagiarism Detecting Tools?

plagiarism checker tools

To simply detect the copied content online. If you want to know who copied your content, plagiarism detectors help you easily figure out that. Google releases latest updates to either penalize or reward websites.

If your websites have thin contents or using bad strategies to build links, it will automatically get penalized by Google’s updates like panda and penguin. If you have quality contents, you will get top results in SERP’s, it is as simple as that.

So if someone copies your content, Google crawlers see multiple pages on their search results with the same information. Even though if you are not copying from others, your site might be penalized because of others stealing from you.

To prevent this, you need to regularly check Google search results whether someone is copying your contents or not. Then you need to take specific actions (DMCA etc.) to remove that contents from other pages.

To find who is copying your contents on Internet, plagiarism detecting websites help you solve your problems. Yes, surely you can also use Google (copy and pasting your own content) to find who is copying your contents, but it becomes a mess when you want to search bulk web pages.

That’s the reason why I decided to write a specific post on using the free duplicate content checker tools to find copied contents, I hope you will like all of them. Try one after the other, and let me know which one you liked most in the comment section.

The Top 11 Plagiarism Checker Tools and Websites are

Best Free Plagiarism Checker websites

1. Plagiarism Checker By EduBirdie

This is the best duplicate content checker tool created by EduBirdie. If you want to create high quality and error-free copy to get more visitors to your sites, this tool is for you.


  • The ability to easily check grammar, readability, and plagiarism issues within your text
  • 1500+ patterns checked for identifying errors in your text
  • You can cite sources and rephrase text automatically
  • Improve your content’s overall readability score

How to use this tool?

Using this tool is easy as it has an easy to use interface. You just need to visit their website and paste all the text you want to check for plagiarism.

Click on the “Check for Plagiarism” button to find if there’s any copied content within your text.

Here’s how it looks like;


As you can see above, you can easily identify if your copy has plagiarism issues. It also gives you a list of all the grammar mistakes, reliability scores, synonyms, etc to improve your copy.

Quick note: You can log in or sign up to unlock the free version of the BirdieDon tool to see more results. If you want a comprehensive report that includes your essay’s average score and similarity percentage, you should go with their premium plan that costs you $9.99 per month.

2. Plagiarism Checker by Grammarly

Grammarly’s plagiarism checker is one of the most popular tools to detect plagiarism in your text.

The good part about using Grammarly is that along with plagiarism issues, it also checks for other writing issues. 


  • Easily detect plagiarism from ProQuest academic databases and over 16 billion web pages
  • The ability to see where you need a citations
  • Also offers a grammar tool that helps you instantly find and correct over 250 types of grammatical mistakes
  • Get writing suggestions on your content’s grammar, punctuation, vocabulary, and sentence structure

How to use this tool?

To use this tool, you need to paste the content or text and click on the Scan for Plagiarism button to find copied text. Alternatively, you can also upload a file to check the whole document for plagiarism issues.

Once the scan is done by Grammarly, it will show you if it has any copied content.

Here’s how it looks like;

Grammarly’s plagiarism checker
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3. Plagiarism Checker X

Plagiarism Checker X helps you check copied text in your essays, research papers, blogs, and more. It’s a desktop software that you can download FREE from this page.

Although it has premium plans, it also comes with a FREE basic plan that helps you check duplication issues within your text.


  • Your content is instantly scanned through over 16 billion indexed web pages to detect duplicate text
  • It also allows you to analyze multiple documents at once to detect plagiarism issues
  • It has a FREE basic plan that you can use to perform 30 daily searches for free 

How to use this tool?

Paste the text on their software and it instantly checks for plagiarized content. 

Here’s how it looks like;

plagiarism checker x

As you can see above, 93% of the content is duplicate content in the above example copy. The software also gives you an overall similarity score out of 100 along with the sources of original content. 

4. SearchEngineReports

Search Engine Reports offers you a wide range of free SEO tools including plagiarism checker, keyword position checker, reverse image search, and many more. You can paste up to 1500 words to find duplicate content at a time.


  • Enter up to 1500 words in their website’s text area or you can also upload your text file and click “Check Plagiarism” to get instant results
  • The ability to check plagiarism by URL
  • Ability to upload from Dropbox
  • This tool shows plagiarized content with the percentage
  • It also shows the unique content percentage

How to use this tool?

You can enter the text or content once you’re on their website. Just hit the “Check Plagiarism” button.

You can also enter a URL that you want to check the copied content, this tool will take care of the rest. It will show all the copied contents along with the sources. 

Here’s how it looks like;

search engine reports

As you can see above, it instantly generates the result showing you whether it’s unique or copied along with the sources of the copied content. 

5. ITS Free Plagiarism Checker

ITS Free plagiarism checker is a free and easy-to-use tool that helps you quickly detect any text or content for plagiarism. This website not only allows you to check for any plagiarism in English but also provides a comprehensive range of private tuition, tutors, and exam preparation services.


  • Completely free to use
  • Instantly checks web search results to detect copied content
  • The ability to check text for duplicate content up to 300 words at a time

How to use this tool?

Its usage is simple as you can either type or cut and paste text from any document into the free plagiarism checker click “Check For Duplicate”.

It instantly checks the web search results to find duplicate content.

Here’s how it looks like;

ITS free plagiarism checker

As you can see above, if the tool finds any copied content, it shows you the message with “we have found possible plagiarism in your text” along with the sources of the content.

6. DupliChecker

The site offers a free online plagiarism detection tool without any registration required. On top of that, DupliChecker also provides a lot of useful tips and information regarding plagiarism, but it might take forever to read everything on this site though. 

The only limit is you can only search for 1000 words at a time, not a better way to find your copied contents if you want to search for detailed posts or web pages, still, it’s a great plagiarism tool to find copied links or content.


  • It’s 100% free to use and shows you accurate results
  • You can search up to 1000 words at a time to find duplicate content issues
  • Shows you the original content sources (so you’ll know where the copied content came from)

How to use this tool?

Using the DupliChecker tool is fairly simple. Just enter the text or copy you want and press the “Check Plagiarism” button to find duplicate content.

Here’s how it looks like;


As you can see above, the tool instantly performs plagiarism checks to find duplicate content. 

7. Plagium

Plagium is another plagiarism detector that is free for all to use. The checking algorithm scans the web and new for similarities and the users can opt to display the summaries, text found, timeline and/or real time results.


  • It also offers a free Google Docs Add-on so you can easily analyze your Google Docs with Plagium. You can grab it from here.
  • Helps you easily detect the originality of a text by identifying possible plagiarism
  • As long as you do not have too many searches in a day, it’s free to use as you’ll not be charged

How to use this tool?

You need to enter the copy of the content that you want to check and fix copied content and this tool does the rest. You can enter up to 1000 words at a time to check copied content in your text.

Here’s how it looks like;


The best thing about this tool is you can not only check the web, but you can also check social media sites like Facebook, Twitter, etc including news pages to find if someone copied your contents.

8. Copyleaks

Copyleaks AI-based anti-plagiarism checker tool that helps you easily detect plagiarism accurately. It also comes with a customizable interface and it can also be integrated with your website or platform with an API key.


  • Offers 20 free scans/month (if you want to scan more copies, you can purchase their premium plans)
  • Detection of identical and paraphrased content
  • Compare your documents to one another to find duplicate content
  • The ability to scan your text in more than 100 languages
  • It also supports various file formats such as pdf, Docx, and more

How to use this tool?

You need to create an account with Copyleaks to use their plagiarism checker tool. You can create a free account to perform 20 free scans per month.

Here’s how it looks like;


As you can see above, all the copied text or content is highlighted in red color so you can take the necessary action. 

9. Free Plagiarism Checker from SmallSEOTools

Small SEO Tools is a website that offers 100% free SEO tools along with plagiarism checking tools. 

You can also find and use other SEO tools such as link tracker, rank checker, grammar check, paraphrasing tool, and so on. Although their duplicate content checker is pretty basic but thankfully, but it’s completely free to use by anyone without signing up. 


  • The ability to check Plagiarism by page URL
  • You can search for up to 1000 words at a time
  • You can also exclude a specific URL while finding duplicate content
  • 100% free to use and no signup required to use their tool

How to use this tool?

Once you’re on their plagiarism checker tool, copy and paste your content in their tool, and then click on the “Check Plagiarism” button.

That’s it, it instantly checks your text for duplicate content. You will plagiarism score out of 100 if this tool finds copied content.

Here’s how it looks like;

small seo tools

As you can see above, this tool shows you how much content is plagiarized and you can also click on the “Matched Sources” to find the original content sources. You can also share your reports, download, or start a new search.

This tool also allows you to upload a file from your computer, or cloud storage drives like Dropbox and Google Drive to find duplicate content.

10. Plagiarism Detector

Plagiarism Detector is one of the best free plagiarism checkers available on the web right now. If you want to conduct as many searches as you like to find duplicate content in your copy, you should use this tool.


  • Gives you a plagiarized copy score (along with the unique text score)
  • You can download the report 
  • It’s free to use and no signup required 
  • You can also perform a search by entering a URL to detect copied content

How to use this tool?

Once on their website, enter the text or copy and click on the Check Plagiarism button to continue.

Here’s how it looks like;

Plagiarism Detector

As you can see above, if your content is copied, it will show you how much of the text is plagiarised (and how much is original).

11. Copyscape

Copyscape is probably the most popular search engine for identifying plagiarism and duplicate content. Copyscape lets you easily find all the websites that have copied your content without permission. 


  • Free to use (and it also has a premium version that offers even more amazing features)
  • You can also use a few banners from Copyscape to scare people from stealing contents from you
  • This tool checks whether similar text content appears elsewhere on the web so you can take necessary action

How to use this tool?

Once you’re on their website, enter the URL you want to search the unique content for, and if the content is copied, it will show you the results. 

Here’s how it looks like;

copyscape tool

As you can see above, 10 websites copied our blog post on free plagiarism checker tools. 

It will show you all the URLs with the percentage of matching words that are copied or found similar on the web. If you find anyone’s stealing your content, you can file a DMCA complaint.

Browse more Blogging Tutorials:

FAQs: Plagiarism Checker Websites

What is plagiarism?

Plagiarism is copying other’s content intentionally or unintentionally without taking their permissions.

What is a plagiarism checker?

Plagiarism checker is a medium (could be a website or a standalone tool) that helps you to check your content for plagiarism.

How do I check if something is plagiarized?

You can go to the plagiarism checker websites and then all you need to copy-paste your content or simply upload your file and check for plagiarism.

What is the best plagiarism checker for blogs?

Copyscape is a premium tool and that could be the best plagiarism checker for blogs. Though every plagiarism checker included above works very well.

How to check my blog plagiarism for free?

Dupichecker is one of the best user-friendly websites where you can check your blog plagiarism for free.

How do I know if the content is unique?

When you check your content for plagiarism in any plagiarism-checker you will be presented with a detailed report showing whether your content is unique or not along with the percentage of plagiarism.

What does Copyscape passed mean?

Copyscape is one of the best plagiarism checkers and Copyscape passed simply means is that your text is unique and not copied from other resources.

Is Grammarly premium worth?

Yes, the Grammarly premium is worth using. It will help you with a lot of advanced writing feedback like Correctness, Clarity, Engagement, Delivery, and Plagiarism of course.

Final thoughts about free plagiarism checker tools and websites

I would recommend you to use these tools regularly to check the copied contents and take strong actions whoever is stealing your content or web pages. And don’t forget to create a copyright disclaimer page on your websites, also open an account in DMCA to file complaints.

All in all, the websites mentioned above all have their very own pros and cons which you should take into consideration before you decide on the best site that suits your personal needs. If you’re a teacher or lecturer checking up on your students’ works, then opt for the site that caters to people of your profession.

Meanwhile, if you’re an author, go for the site that includes or specializes in checking against commercial articles and handouts and make sure to sue the blog authors who copy your stuff by using these copied content checkers.

Please let me know if you know any more free plagiarism checker sites or tools in the comments, I would be glad to consider your thoughts.

About Author
Anil Agarwal is the Founder of Bloggerspassion. He is a full-time blogger and SEO expert who has been helping people build profitable blogs for over a decade Now. He has been featured in Over 100 Publications including Forbes, The HuffPost, HubSpot, Shopify, Semrush, Kinsta, Bluehost, Hostinger and G2.com etc. Know more about Anil Agarwal from here.

Reader Comments (41)

  1. Thanks Anil,for sharing such an informative blog as this will be of huge help to the content writers or bloggers to publish original content and the issue of plagiarism can be avoided or be fixed.

  2. Nice write up. But I want everyone to take note about Copyscape, anytime I enter my site just to check if there is any copied content, I found no result. Then I apply for Adsense and I got a reply that I have scrap content on my site, so I check all my content on SmallSEOTools to find those duplicated content. To my surprise, there is a lot of content that as been copy on my website to other sites, and Copyscape didn’t see any of this. so I don’t thing Copyscape is a great choice for me.

    • We’ve used Copyscape several times and it generated some of the copied search results (our content is copied by other sites, so it was showing those results). One thing you can try is instead of searching for a ton of text at once, pick few paragraphs from your blog posts and try to search for duplicate content using these tools like Copyscape as it gets you better results.

  3. I also use copyscape premium now for my blog and it is working well to check plagiarism. But some month ago, I used to use duplichecker, it is good too. Good list Jasmin.

    • Copyscape premium is a great tool which helps you to detect whether your content is original or not. The best thing about Copyscape is that it doesn’t require entering keyword from your content in the hope of matching the same content as Google would and analyses entire pages and can easily detect matched pages, sentences etc which is really great. Thanks Jitendra for the comment.

  4. Hi,
    its an awesome tool collection you have shared that is really cool and helpful to me and its better than other paid tool like Copyscape and other paid tool thanks for sharing great list

    • Glad you found it useful Usman, let me know if you’ve any more questions and what tool do you prefer most to find copied content online?

  5. I am using smallseotools for this purpose. Checking plagiarism by uploading file is easy because i can’t paste more than 1000 words for checking, it would be better, if anyone could paste more words.

    • Hi, maybe you should go for copyscape premium version then to check the duplicate content as Copyscape helps SEO people in providing accurate results. Copyscape free version is limited and if it comes to premium where you can check the duplicate content by Copy-Pasting the content or URLs. Hope it helps!

  6. This is the Ultimate list of Plagiarism Checker Tools. A plagiarism checker tools is like as compulsory tools in blog-sphere. Thanks for sharing such a huge list. You have done a comprehensive research on these tools.

    • Yes Swapnil, that’s 100% right, if you really want to create unique content, you must use these tools so you can be safe from all the plagiarism. If the blog content is new, there’s a good chance Google hasn’t scraped it yet and it could also be a blog Google doesn’t scrape (perhaps because there aren’t enough outside links), so always make sure you’re adding only UNIQUE and original content.

    • Noplag is also a great tool Sam. It has become a bigger, better and more accurate tool for checking copied content. Thanks so much for the suggestion.

  7. Our open source software is infected by plagiarism. It is difficult for me to understand why some of the bloggers don’t care about intellectual property rights. Besides soon or later Google will identify stolen content and cast away your blog in the search system to the end. Sometimes, your content can be reposted without your permission, so if you want to catch a thief, choose the plagiarism checker which scans documents in real time across Google. My anti-plagiarism tool is Unplag https://unplag.com/. I have chosen it because: it supports a lot of document formats, it uses live-web indexes and it is lighting-fast.

    • Thanks Tilda for the thoughtful comment and your suggestion. As discussed in the article, Copyscape tool provide an online plagiarism discovery service which checks whether related text articles seem elsewhere on the internet. Besides that, we also recommend Grammarly as it is one of most popular and well known tools for grammar errors and also offers you plagiarism detection tool. You can check out this post as well to get HUGE discount during this black Friday week: https://bloggerspassion.com/grammarly-black-friday/

  8. All the tools are very useful but specially which one i prefer most for my writing task that is Small SEO Tools. As a free service it’s really very good and user friendly. Besides it i also use free plagiarism checker which is provided by Solid SEO Tools. It’s really awesome to get perfect result in a minute . It doesn’t need to download. It’s 100% hassle free. Thanks Marilyn for the nice contribution.

    • Hi Ravi, as you said Small SEO Tools is really great and provides you a ton of free tools including copied content checking tools and I usually prefer premium tools like Copyscape because of one reason: they provide accurate results when compared to free tools.

  9. Hi Anil,
    What a joy to be here on your page for the first time.
    Nice read. Great list of tools a must use for the bloggers.
    I used some of the tools mentioned in this informative piece.
    I am sure this will be a great collection of tools for bloggers and writers.
    Thanks for compiling it well here.
    Keep sharing
    Have a good day
    Best Regards
    PS:. I found you on the pages of pro.bloggers dot com.
    Glad to mention this.

    • Hi Philip, glad you landed on this blog. Thanks for the comment, yes definitely you should be using these tools as different plagiarism detection tools have their own speed of adding new web pages and various methods of check.

  10. Do the free plagiarism checkers store your work and publish it on the internet later? This is freaking me out as I checked my article for plagiarism using a couple of these free plag checkers…seotools and plagtracker.

    • No Mounika, none of the free plagiarism checkers store your work and publish it on the internet later as thousands (if not millions) of web pages are being checked every single day. To store that kind of size information, they’ll have to maintain huge databases which is also expensive. So they don’t store, you can use without any hassle.

  11. i am using Duplichaker for checking plagiarism it’s very nice and i can trust on this. can you suggest any another tool best from Jennifer

    • You can also give a try to solid SEO Tools as it’s an amazing tool for any blogger and it can help you in a top level to satisfy your demand from a super tool. I personally prefer this tool and always and I’m sure you’ll love it after a try on it. Thanks for the comment Jennifer!

  12. Really nice article, easy to read:) This list of free plagiarism checkers is really helpful, I may add one more to that: Copyact – it enables text as well as image search.

    • Hi Jason, thanks for letting us know about Copycat which enables text as well as image search. You can also give a try to Plagium, Plagiarisma, DupliChecker etc as they are excellent tools to check duplicate content online, no doubt Copyscape is best tool to check Plagiarism.

  13. I use copyscape premium and it is working well to check plagiarism. I will check out these free tools as well however, I know few of them already. Good list Jasmin.

    • copyscape premium is a great addition to your list Atish as it easily detects copied content both online and offline and make sure you’re using it as much as possible to get the more out of it.

  14. Hi, thanks for the article, very helpful! is there a tool that helps check for plagiarism across languages to make sure a freelancer is not just translating from other websites ?

    • Yes, there are many tools like Plagium, Plagiarisma, DupliChecker etc that you can use to check for plagiarism across languages to make sure a freelancer is not just translating from other websites. Just make sure to go for premium tools over free tools in that case, if you want to get accurate results.

  15. Excellent collection jasmine and good to read your post. i use smallseotool for checking accuracy.
    But your list is really fine. so i’m going to use copyscapetoo. I heared about that but never used.

    I really appreciate your conclusion and work with suggestion regarding DMCA.

    Thanks for post. Keep posting with great content.

    • Make sure to give a try to copyscape Anubhav as it’s the widely used and highly recommended tool by almost majority of the professionals worldwide to detect copied content. Thanks for the comment.

  16. i try all tools but all are paid version there is no tool which is free for unlimited use, please if u know any tool which is free please suggest me

    • You can give a try to copyscape and also Plagium, Plagiarisma, DupliChecker etc as they all are free but I recommend you to check out premium version of some of these tools as they are more accurate.

  17. I use article checker – it seems the most user-friendly. Even if I try to express my own ideas, for sure that there are several other writers who has similar ideas, so it’s always best to be safe.

    • Thanks Mia for the suggestion, actually whenever you paraphrase, summarize, or accept words, phrases, or sentences from another individual’s job, it is critical to indicate the origin so you can only post unique stuff and information on your site or blog and it also helps you get better rankings in search engines like Google. Here’s where these tools come into play.

  18. Oh, I saw the description at the end of the post. Sorry, I missed that earlier, because usually other blogs put that piece of info in the “Article by” box. 🙂

  19. Thank you for publishing my writing. Can you please check why my bio is not properly displayed? I thought I have it entered in my profile. Thanks ya! 🙂

      • Oh, I have a longer description about myself which I entered in my profile in the WordPress admin/dashboard? Sorry, I am actually at a shared computer, so might not be a good idea to login and double check.

        • I just checked out, you have the same description on profile page as well. If you want me to change it, please email me your detailed author bio. I will add that to your guest post.


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