Plagiarism Checker: The List of 13 Best and Free Tools

Imagine this: you hire a talent to write quality articles for your business website. You’ve outlined a content strategy and now you’re all set for growth.

But there’s one problem.

In fact, a very huge problem.

Your writer is actually plagiarizing content. To make things worse, you haven’t caught them yet.

So, you go ahead and publish tons of articles and blogs on your website. Months later, you’re not seeing any growth. Heck, you’re experiencing a downfall, thanks to Google’s new E-E-A-T.

What if you could’ve checked for plagiarism before publishing articles and caught this misleading writer?

In this article, you’ll learn about the 13 best plagiarism checkers, some of them are available for free online. These plagiarism checker tools will help you ensure your content quality is never compromised. And you give the best to your clients and customers, while ensuring SEO guidelines.

Keep on reading to find out more.

Why Are Plagiarism Checkers A Must For Creating Quality Content? 

Checking for plagiarism becomes even more important in the era of AI content generation. While most AI models work on the “predictability” model, meaning they don’t copy-paste from the Internet but predict, it is rare you’ll find plagiarism with that methodology. However, it’s possible.

Stop Plagiarism

Further, there are countless amounts of content, papers, blogs, and articles online, so it is nearly impossible to check if you have copied something.

However, some accurate plagiarism checker tools make it possible to detect plagiarized content. 

These have powerful technology that scans your copy, comparing it with the millions of content published online for a detailed report on copying within minutes.  

Some of these tools are free, while you’ll have to pay for the others to get premium features such as better accuracy. But simply paying or subscribing to one is not advised, as free alternatives are available too. 

There shouldn’t be any compromise with quality.

Click on any of the tool’s name above to jump.

Top 13 Best and Free Plagiarism Checker Free Tools

There are countless free and paid plagiarism checker tools online. We have shortlisted the best free ones below: 

1. Duplichecker Duplichecker

The first one on our list is Duplichecker. It is considered one of the best free plagiarism checkers for quick detection, which makes it ideal for teachers, students, and writers. It is entirely free of cost and gives results within seconds. 

At the same time, if you are a brand or marketer taking content or copy from other writers, you can check its plagiarism quickly. 

For this reason, Duplichecker is an essential tool for content creators and academics. To use it, open the tool and paste your text in the text box. Consequently, choose the check for plagiarism option below, and you will get your detailed plagiarism report. 

This tool can allow you 50 scans for free every day. So, it’s accessible to bulk-checking articles and straightforward to use. You can only check 1000 words at one chance in a free account. To increase that limit, you need a paid version. 

At the same time, it checks from various file formats like .rtf, .txt, .tex, .docx, .doc, etc. It will show a result in teens if percentage and rephrase the content to remove the copied sentences. 

2. Small SEO Tools 

Another tool on the list is Small SEO, which has some fantastic and exciting features. It has all the basic features and is available free of cost. You need to copy your text and paste it into the text box. 

Click on the check for plagiarism option, and you will get a plagiarism report within seconds. Also, it will highlight the plagiarized sentences in red below with their source. 

Moreover, this is simple and effective for use. At the same time, it can help you to upload documents from cloud apps for a direct check. However, it is less effective than some premium tools. 

SmallSEO tool accepts different file extensions for uploading, including .rtf, ex, .doc, .pdf,.txt, .docx, and .odt, etc. It scans through countless web pages instantly.  

Another attractive feature of this website is that it offers detailed reporting for further sharing. It supports various foreign languages too. It can scan up to 1000 words and accept a web URL at one chance. 

You will get sentence-wise results in color-coded format for easy understanding. Furthermore, you get a side-by-side comparison of the matching documents to help remove it. 

For mobile users, Small SEO Tools has a unique mobile app. It is available for both iOS and Android users.

3. Plagiarisma

Plagiarisma is a plagiarism checker that supports more than a hundred different languages. Just upload your content through its web page or your drive link. 

A good feature of this app is that it won’t store the content you upload. So, there is no chance for privacy intervention. 

Although it has an old-look interface, it produces accurate results. You can enter the webpage URL directly in the checker and click the check button. 

Otherwise, you can copy the text for checking too. It supports different uploads like TXT, HTML, and RTF. 

But, the free version checks through the Bing search engine only. If you want to scan through the results of the Google website, you need to register for it. Also, then you will get quick results. 

4. Search Engine Reports 

The next one is Search Engine Reports. It is one of the best plagiarism checkers for content writers. You can upload the files from the drop box to check. It gives an accurate percentage of plagiarized content, and you can download reports for further use. 

It shows a direct comparison of copied content with the source online. Also, the sentence-wise results make it easy to identify copied content and change it. It gives a highlighted document view and helps to rewrite the copied ones. 

Search engine reports support Url exclusion features. But the free version allows for online 5 URLs. However, you need the paid version to cross that limit. The tool can also help you download a PDF file report too. 

5. PaperRater 

PaperRater is a proofreading service that helps you to perform multiple quality checks. This free tool does grammar checks as well as plagiarism checks. You need to copy-paste content on the next page to analyze plagiarism. It has certain filters for personalizing the setting based on your profession, use, and document. 

PaparRater runs a check from more than 10 billion documents with a robust algorithm. In the free version, you can do ten checks a month. But you will need to find the exact plagiarized lines from the free plan. 

You need a paid Premium plan to access additional features of more checks, exact plagiarized lines, etc. The tool is famous for its accuracy and immediate results. It is a global checker used in multiple countries. 

6. Copyscape 

You can detect plagiarized content within minutes using Copyscape. You can enter a URL link in the checker to scan copied content from the site. It has a simple and user-friendly interface.  

It has a unique badge feature where you can identify whether someone has copied your content. Also, you can check content on your WordPress site directly with its special WordPress plugin. 

Copyscape is an ideal site for professionals who need a plagiarism checker. Moreover, this tool gives a free plagiarism warning banner to add to your website. It will warn potential users against copying the content from your site. 

7. Plagiarism Detector 

Plagiarism detector is one of the most accurate free plagiarism checkers available online. It performs a free search instantly without any limit. Just copy-paste your content, and it does the rest. The tool has a deep search option that scans deeply through multiple sites for better accuracy. 

If you are not willing to copy-paste content, enter the site URL, and it will scan through it. With the latest technology, you can get better features in its ‘Pro’ version, like No ads, Deep search, Accurate reports, additional support, and checking up to 25k words. 

8. Writer 

Next comes Writer, a renowned plagiarism checker for students, teachers, and schools. This AI-powered writing assistant scans content through a billion pages online. It enables you to check spelling, tone, style, and more via its grammar check. 

You can even integrate it with Google Chrome, Microsoft Word, or Google docs for quick use. You will get a detailed analysis of the plagiarized sentences from other sites. 

9. Pre Post SEO

Prepoatseo  Plagiarism Checker

Moving on, we have Pre Post SEO. It is a comprehensive site with over 95 free tools. Amongst them, you get a free plagiarism checker that uses a deep search algorithm for precise results. 

The plagiarism checker has all the basic features like URL or copy-paste text search. Moreover, it accepts other file extensions like .doc, .docx, .pdf, and .txt. If you use the site for the first time, you can check 500 words. 

You can check for up to 1K word count in a free account. It has a maximum limit of 200 queries.

The free tool gives the percentage of plagiarized content and underlines them with the source link. You can view the plagiarism report as an HTML or PDF file. 

10. PlagScan

Plagscan Plagiarism Checker

If you are looking for a plagiarism checker for professional or academic use, Plagscan is your thing. The tool is popular among educational institutions for its accuracy. It will give you the source website of plagiarism and a chance to compare them. 

Also, it will help in rephrasing to remove plagiarism. There is a free trial for single users with all the essential features. At the same time, you need a premium plan for accessing more valuable features at $5.99. 

The tool uses separate folders for representing different matches. It even provides you with the source that helps in changing it. For further use, you get a downloadable PDF. It gives the percentage of plagiarism and doesn’t share your document anywhere else. 

11. Scribbr 

Scribbr Plagiarism Checker

Scribbr is an advanced plagiarism checker tool, exceptionally designed for students. Furthermore, this tool can detect copied sentences. But it will leave common words and phrases. 

You will get a detailed report with the plagiarism percentage and marked similar content. 

Additionally, you can read through their guide if you need help understanding how to use Scribbr. The subscription to this tool costs $19.95. Also, it has three other pricing Plans to choose from. 

12. Quetext 

Another top-rated plagiarism checker is Quetext which has some fantastic features. In the free service, you get a simple and friendly interface where you need to copy-paste your text. Quetext scans your content across a massive database online. 

It has better accuracy and gives exportable PDF Reports. It accepts multiple file uploads of 5 files at a time. For a deep search, you need to get the paid version of $9.99 monthly. Moreover, it will keep your data private. 

13. Grammarly

Grammarly Plagiarism Checker

The last plagiarism checker on our list is Grammarly. It is a prominent Grammar-checking tool that even checks plagiarism. It can identify duplicate content with better accuracy. Moreover, the tool checker checks plagiarism from over 8 billion web pages. 

Unlike other plagiarism checkers, the checker calculates the originality score of the content. Also, it keeps your writing private. Grammarly is easy to use with quick and accurate results. It is an ideal tool for professional writers and students. 

The pricing of its premium plan starts from $11.66/month. For better use, you can get its extension for Chrome, Safari, Firefox, and Microsoft Edge. At the same time, it integrates with Microsoft too. However, it has a Word limit of 150K.   

Frequently Asked Questions 

1. How much percentage of plagiarism is best?

A 0% plagiarism is considered best. But, some search engines accept text similarity of up to 5% to 10%. However, if the limit exceeds then, the content becomes unacceptable. 

2. Why is plagiarism unethical?

Plagiarism means copying and using someone’s text. It is a kind of intellectual theft, as you will be stealing someone else’s work. For this reason, it is widely unacceptable. Also, your plagiarized content online will be taken down by the search engine. 

3. Where to check plagiarism?

Several free plagiarism checker tools can help you. Here are a few best of them: Duplichecker, Copyscape, Grammarly, Small SEO Tools , and Scribbr.

4. When is plagiarism acceptable?

Ideally, plagiarism is never acceptable, and you shouldn’t do it in content writing. However, most companies accept plagiarism between 5% to 10%. Even the latest Google’s Helpful Content Update algorithm strongly oppose duplicate content, and prioritize new and fresh content.

Summing Up

As per your needs, you can choose an ideal plagiarism checker tool from the list mentioned above. The tool will ensure that your content is 100% unique and plagiarism-free.

When you consistently publish high-quality and unique articles which are plagiarism-free, you will soon see an uptick in your growth.

Don’t rely on shortcuts if you want to achieve long-term success.

Vipin Gaur
Vipin Gaur

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