12 Google Duplicate Content Checker Online Tools for Free

12 Google Duplicate Content Checker Online Tools for Free

Google defines Duplicate Content as, “Duplicate content generally refers to substantive blocks of content within or across domains that either completely matches other content or are appreciably similar. Mostly, this is not deceptive in origin”.

Duplicate content or Plagiarized Content is the worst enemy any blog can have. Google hates duplicate content and it can cost you with a drop in your search engines rankings or Google can even remove your website or blog if it is having duplicate content.

All search engines thrive very hard to make their user experience better and that’s why they take plagiarism as a direct threat to their user’s experience. That’s why, it is highly advisable for you if you don’t want to get penalized by search engines to check your existing content and any content you plan on publishing in future, for duplication. I also regularly use these tools to check my site for duplicate content.

If you accept guest posts on your website or blog, then you should definitely try these tools as many times bloggers try to give duplicate content in the name of guest posting just to get a backlink which can be harmful to your site.

In this post, I’ve shared some of the best Google duplicate content checker online tools which you can access completely for Free. 

Google Duplicate Content Checker SEO Tools for Your Website:

1. Copyscape: Copyscape Duplicate Content Checker SEO Tool for Website or Blog

First on the list is Copyscape which is one of my favorite and most accurate Google duplicate content checker tool available online for free use. It is one of the oldest and most popular plagiarism checker.

Copyscape provides a free service that lets you easily search for plagiarism online and identify instances of content theft. Simply type in the URL of your original content, and Copyscape does the rest. Although, the tool is free but the daily use is limited to some searches per user.

It also offers professional services for more advanced needs. If you have large volume of content then you can sign up for Copyscape premium services and then integrate their API into your CMS for easy identification of duplicate content.

Duplicate Content Checker like Copyscape:

2. Siteliner:

Siteliner Duplicate Content Checker SEO Tool for Website or BlogI really like this tool as with duplicate content checker, it also provides a complete analysis of website once every month. Siteliner is a free service by Copyscape that lets you explore your website, revealing key issues that affect your site’s quality and search engine rankings.

Siteliner can check for duplicate content, broken links, page power and it generates a complete report after crawling and analyzing your site which reveals some great information which can ultimately help you in improving your website or blog.

Although the free Siteliner service is limited to monthly analyses up to 250 pages but this is more than sufficient for small or even any medium size website.

3. Grammarly: Grammarly Duplicate Content Checker SEO Tool for Website or Blog

Grammarly provides best free plagiarism checker and proofreader. Grammarly is an automated proofreader and plagiarism checker which makes sure everything you type is easy to read, effective, and mistake-free.

This is one of the best tools you can use and Grammarly also has free extensions for Chrome, Safari, and Firefox. Grammarly’s plagiarism checker cross checks your text against over 8 billion web pages, detecting plagiarized passages and highlighting sections that have been previously published elsewhere.

Internal Duplicate Content Checker Tools:

4. Duplichecker

Fourth on the list is Duplichecker which is also a free Google duplicate content checker. It gives two options: you can either paste the content and check for duplicate content or you can upload the text file.

Duplichecker is free for all to use and it works with 100% accuracy. Each plagiarism check compares your text against every published web page on the internet, and nothing can escape from DupliChecker. If there are no matches, rest assured that your text is plagiarism free.

5. Plagiarisma

Plagiarisma is, even more, better as it gives you three options to check for any plagiarized content. You can upload any text, HTML, doc file, search by URL or just paste the content to check.

It detects copyright infringement in your essay, research paper, coursework or dissertation and it supports Google, Yahoo, Scholar, and Books. More than 190 languages are supported by Plagiarisma.

6. Plagium

It can be used as an alternative to Copyscape and it has many advanced features as well. You can check articles having maximum 25,000 characters.

They also offer premium features such as Quick Search to search for plagiarism for $0.04 per page, Deep Search for in depth plagiarism check for $0.08 per page and File Comparison to Compare uploaded files for $0.005 per page.

7. Plagiarism Checker:

This site was established in 2006 and it provides free plagiarism detection service on the internet. You can either paste your content into the search box or just check a complete web page for plagiarism.

It also gives you the option to create a Google alert directly if you want Google to email you when new instances of your work are published on the Internet

8. Plagspotter:Plagspotter Duplicate Content Checker SEO Tool for Website or Blog

It is another online Google duplicate content checker tool and you can use it by entering the web page URL to find its copies on the web.

Plagspotter also has Batch Search feature with which you can check your whole site for plagiarism. It allows you to automatically monitor your selected URLs for duplicate content by scanning your content on a daily or weekly basis, detecting plagiarism and notifying you by email of the % of duplication.

9. ThePensters:

Another free plagiarism detector by ThePensters is a great tool that you can use to check for duplication in your assignments or even for blog posts. Two languages are supported: English and Spanish and you can enter a maximum of 1000 words in the box to search for any duplicate content.

Unregistered users can use the tool for max 5 times in a month and registered users can use it for unlimited times. Both bloggers and students can use this effective tool.

10. WorldEssays

If you want to check your texts for free, here is a good option to scan your writing – Free Plagiarism Checker by WorldEssays.com. You can paste the text for analysis with maximum symbol count of 1000.

11. DMCA:

You can protect your website content by DMCA and it also provides a tool to check for any duplicate content. It also provides website scanner and website detective

DMCA has two plans:

Basic Protection which is free and designed for small personal websites and website owners who want a solution that effectively deters content theft Protection.

Pro Protection for $10 per month, designed for professional websites and businesses that require the best defenses to secure their property.

12. Webconfs

This tool allows you to determine the percentage of similarity between two pages. You have to enter URLs of two pages and it will do the rest.

Well, I’ve shared almost all the great tools I have used and these will be helpful for you also.

So, share them and let me know which tool you liked most and why by leaving a quick comment below!


  1. Thanks bro I really needed to know about such sites, I don’t know how but I have got some duplicate content on my site. hope now I will be able to fix it.


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