Best free duplicate content checker tool

Top 10 Free Sites to Check Duplicate Content

When you are in the field of writing, Whatever the activity, be it a blog, or teaching, or research, or even digital marketing, it is essential that you check on the uniqueness of your content. In order to do that, access to a good free plagiarism checker tool is necessary.

Plagiarism, whether intentional or unintentional, can be a very harmful practice. It causes people to lose respect of their peers, their jobs, demolish political careers, have legal repercussions, and even cause the cancellation of educational theses and researches. Infact, as the world is going online, Plagiarism is even easier to detect and has become even more taboo.

Best free duplicate content checker tool

When the concerned content is for a website, duplicate content can be downright harmful and can damage the reputation of your website, as well as incur a SEO penalty.

Best Free Duplicate Checker Tool

Compiled below is a list of free sites which you can use to check if your content is duplicate or redundant, and if it appears to be plagiarised from another source.

1) Grammarly Online Plagiarism Checker

Grammarly is a pretty well-known site amongst writers.It is considered one of the best plagiarism checkers around. It is a multi-feature tool and it is pretty easy to use. In addition to plagiarism, it also spell checks the content and checks its grammar too. That is why it is highly recommended.


  • Free to Use
  • You can also upload a doc file to check duplicate content

Official Website: https://www.grammarly.com/plagiarism-checker

2) SmallSEOTools

SmallSEOTools is a multi purpose website that provides a lot of services other than just plagiarism checking. You can use the article rewriter tool and other features such as link tracker, search engine pingler, backlink maker and Google rank checker. Many seo professional use this free tool for website auditing.

Its plagiarism checker is pretty basic and it’s free. It uses a standard reporting format of displaying red text if this tool finds copied content amongst any of the selected websites, this way you can easily figure out if any of the content you chose is copied from your blogs or websites.


  • User can upload .txt, .doc, .docx. pdf file to scan content
  • It also provide WordPress Plugin to check duplicate article
  • Can upload file using Google Drive or Dropbox as well.

Website: https://smallseotools.com/plagiarism-checker/

3) Copyscape

 Copyscape is one of the oldest plagiarism checker sites you will find. It’s fast to use and convenient, but it is outdated. Their Interface looks old but it’s fine as far as you are looking for free duplicate checker tool online.


  • Allow to test live website for duplicate content

Official Website: https://www.copyscape.com/

4) Quetext

Yet another useful content checker is Article Checker. Unlike PlagiarismCheck, you don’t have to register and upload your work beforehand. Article Checker allows you to check your work instantly by pasting your text onto its site to make a comparison. You don’t have to register neither do you have to download anything.


  • Simple and user friendly interface
  • Quick scan for Plagiarism content
  • Can search 3 pages with free account.

Website: https://www.quetext.com/

 4) Duplichecker

This is another free plagiarism checker tool that lets you search through text, DocX or Text files, and also URL searches. It is available for free, with unlimited searches, provided that you register with them.


  • It also allow to check Grammar error
  • Upload Docx or Text File
  • Allow to Check Plagiarism via individual URL

Official website: https://www.duplichecker.com/

8) SearchEngineReports

This site is very simple and easy to use. All you need to do is to paste your text in the text box to compare. You can also just enter a domain name that you want to check the copied content along with the specific keywords that you are looking for, and this tool will peruse through the site and show all the copied content along with the ranking of the keywords that you enter.


  • It allow to check Plagiarism by website URL
  • Max 1,000 words can be search once at a time
  • It also allow to check Grammar

Website: https://searchenginereports.net/plagiarism-checker

5) Plagspotter

PlagSpotter URL search is a free to use, very quick, and completely thorough tool. It minutely scans through a web page for duplicate content and lists down all the sources so that you can review them. It also allows you to compare text with the sources right in the tool and flag it as original.


  • User friendly Interface
  • Enter website URL to scan for similar or duplicate content

Website: http://www.plagspotter.com/

8) PlagiarismCheck

Out of all the plagiarism checker websites we have listed here, this one is by far the best. PlagiarismCheck provides many free services like checking of unlimited number of papers and then generating their plagiarism reports. The website can accept all kinds of file formats and you can instantly download their plagiarism reports. However, a word of caution is necessary. The downside of PlagiarismCheck is that it’s results don’t have any warranty.


  • It allow to scan only 1 page

9) Plagium

Plagium is one of the easiest to use, and quickest search engines for duplicity checking. All you need is to paste the content on the homepage and click on Quick search, and within seconds you will have the results.


  • Free version allow to check max 2 Pages daily.

Website: https://www.plagium.com/en/plagiarismchecker

10) Siteliner

Another popular free site to check duplicate content. The Siteliner is more like a multi-tasking tool that not only check for duplicate content, but also check for broken links and more. A very useful tool that every website owner should use.


  • Scan website for Duplicate Content
  • Also scan for broken links.

Website: http://www.siteliner.com/


11) Dustball

This tool is very similar to the other plagiarism checker websites listed here. It offers the same basic checking services for free. But in case you would like to have a more powerful detection rate and results that are much more accurate than the free version, you can opt for the premium version that is available at $8 per month.

It’s important to put plagiarism-free content without compromising the quality. Hopefully, these best free duplicate content checker tool will save your time. Let me know if you know any other tool.

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