Copyleaks to Duplichecker 7 best free Plagiarism Checkers to use

For written content, it is easy to pass the thoughts or words of another as your own. The prevalence of this could be due to increased access to the internet, which holds extensive information on different topics. Notwithstanding, we often base our ideas on those that already exist. Plagiarism is a fraudulent act, and sometimes you may do it unintentionally. That’s why getting a good plagiarism checker, is essential as one of your must-have writing tools. The best features of these tools are often in their paid options, but there are free tools that are good enough, as in the list below:

1. Copyleaks

It’s free for use only up to 10 pages. It helps one to monitor, track, and detect any copied content. The tool also supports every Unicode language.

Besides, its user-interface provides instant results. Thus it is easy to use. Using online paraphrasing may help you avoid plagiarism in your content.

You can also train yourself on how to paraphrase effectively.

2. Unicheck

It’s was formerly known as UnPlag. You can try it out if you have a stable internet connection. Free scanning is for 500-word texts. Also, after the scan, you will receive an interactive report.

You don’t need to register to use it unless you are checking longer texts.

3. Dustball

It’s a tool by the University of Maryland. You can upload your document as a word file or copy paste it. The search is real time and gives a quick analysis of the text.

Also, it highlights parts of the content where plagiarism is detected.


It is easy to use and works effectively in plagiarism detection. It is a tool suitable for use by teachers and the writers themselves. You can also search for specific phrases if you like.

If the passage exists somewhere on the web, it brings a result, almost instantly. It has no limit on the number of words you can check in one scan.

5. Duplichecker

With this tool, you can only check a maximum of 1500 words per search. Once you reword a sentence, you can enter the text and check for duplicates. It allows users to upload documents with .docx and .txt extensions.

You can choose the area of search from Google, Yahoo, and MSN.


Only one page is free for checking. You have the option of copy-pasting the content or uploading a file in a .doc, .docx, .pdf, .rtf, .txt, or .odt extension. You can also specify the type of solution you want depending on your level of education.

Be it K-12 or higher education. The tool checks for exact matches, rearrangement of the sentence structure or word order, among many other criteria.

7. Paper Rater

As a multipurpose tool, you can use it as a Proofreader, Grammar & Spellchecker, and to detect plagiarism. It gives almost immediate results, after checking the structure and syntax of your content.

You won’t have to sign up or download it, for use. You will also receive feedback on the results of your material.


To avoid plagiarism; it is critical that you learn how to paraphrase. That means, getting the ideas in the original document, then using your word to convey the meaning. It may take time to hone the craft, but practice sure makes perfect.

You can use the above tools to check for plagiarism in your content. Use the generated reports to identify the parts of the text that you need to change. Remember, the final decision on whether the document is plagiarised or not is for the human eye.

In this case, a professor or teacher.