In previous article, we mentioned Installing Grammarly for Outlook but now in this article, I have mentioned best free plagiarism checker available online for checking duplicate content.

Plagiarism is exploiting someone else's work and presenting them as your own for personal profit or honor. It is wrong and unethical. It's detrimental to SEO (Search Engine Optimisation) and how Google will assess and rank your content when it appears on the web page.

No matter who you are writing for, be it a website, school work, or a blog, accessing another website that has the contents you want to copy and paste on your website is illegal, and it's called plagiarism. To help you write unique and quality content, here are the top 6 plagiarism checkers to use.

Why You Need a Plagiarism Checker

There are a couple of reasons you need a plagiarism checker. You will find them below.

Plagiarism checker helps detect all forms of plagiarized words as Google algorithms frown on copy and paste contents

Copied content has its side effects on SEO and your content ranking, so you need a good plagiarism checker to eliminate spun contents

As a student carrying out research work or an assignment you need a plagiarism checker to know the uniqueness of your work to avoid rejection.

Best Plagiarism Checkers

Below are the best tools for checking plagiarism for every writer.


Best Plagiarism Checkers free

Grammarly is a plagiarism checker with a simple design and can be trusted to flag plagiarized words, but it is quick to flag every word it finds on the internet as plagiarized. Grammarly has both free and premium versions. Though its free version is limited, its premium version is affordable. It's the best bet for writers and students. 


  • Grammarly is Limited to English Language checks.
  • Speedy customer service response
  • Detects and points you to the source 
  • of the plagiarized words
  • Safe and secure your data
  • Can scan up to 60 000 words at a go
  • 100% accurate
  • Huge Database



Unicheck is an easy-to-use plagiarism detector created for private, professional, and academic use. The setup is easy, the interface is straightforward, and the information it provides is incredible. 

People can use this tool to check that their writing is original. It enables educational institutions to guarantee that their students' work is unique and not copied. 


  • It is Authorized
  • Offers 99.9% system uptime
  • It manages loads of data. 
  • Affordable and perfect for student's use
  • Provides high-level security of users' data
  • Integrated with Google Docs, office 365, and Chrome
  • Free trial process
  • Provides authorship verification tools
  • Chrome extension



Among all the software options for checking for plagiarism, Copyscape is the most useful one. The application helps you quicky, effectively and accurately verify both your written content and that of others. It has a user-friendly interface. However, it does not have a mobile app.


  • It offers a simple and ads-free interface. 
  • It is unavailable for mobile. 
  • Website comparison
  • API for integrating workflow
  • Allows batch searches
  • Uses free version
  • Accuracy



SmallSEOTools is one of the best tools for writers and students to check for plagiarism. The plagiarism checker lets you upload files in the following formats:.rtf,.ex,.doc,.pdf,.txt,.docx, and. out. This software can look for duplicate text across many different web pages. 


  • Plagiarism report download
  • It supports more than 20 language check. 
  • It supports Dropbox and Google drive. 
  • Compares Plagiarism report easily. 
  • It is User-friendly
  • Huge Database
  • It enables integrated website URLs.



Duplichecker is a software you can use to check if your content is unique. It is a free and paid plagiarism and grammar checking tool and enables flawless material for your blog or any other project. 

The DupliChecker website allows you to check up to 1000 words at a go on its free version. It will scan your content thoroughly and fix out duplicate content. It can check more than 20 different languages.


  • Multiple language check
  • It is ads-free
  • Checks up to 10 000 words on the premium version
  • It is user friendly
  • It is very affordable
  • It offers accuracy
  • 100% system uptime 



Scribbr checker is one of the best at identifying plagiarism in substantially altered source content. It highlights copied words and leave out the unique ones.

Scribble makes finding complete matches easier. In other words, it does not mismatch words to several sources and accurately matches the entire copied passage to its source.


  • Over 20 languages of document support
  • It supports Search and filters
  • It has a free and paid version
  • Source database
  • It is always accessible
  • You can import data
  • Text similarity check
  • Document review

The Bottom Line

Finally, plagiarism checkers utilize sophisticated proprietary algorithms to find similar data across words, paragraphs, and concepts. The sentence is considered plagiarized if it appears on more than one page. The real-time document scanning software that detects plagiarism produces accurate results.

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