10 Best Free Plagiarism Checkers | Accurate & Reliable Tools

• Jun 04, 2024
• 6 min read

• Tags: Plagiarism, Plagiarism Checkers

Whether you’re a student, teacher, or content creator, you must know how to check plagiarism online. But which tool should you use? We have the answer: A list of the ten best free plagiarism checkers of 2024!

While plagiarism is a serious ethical problem, its repercussions are different for different people. We’ve accounted for this while listing free plagiarism detectors. So, some tools on the list offer citation support while others detect AI content and API integration. But let’s not waste any more time!

Here are the ten best free plagiarism checkers of 2024:

• Grammarly Plagiarism Checker
• QuillBot Plagiarism Checker
• PlagiarismDetector.net
• Scribbr Plagiarism Checker
• Small SEO Tools Plagiarism Checker
• Duplichecker
• Editpad Plagiarism Checker
• EasyBib Plagiarism Checker
• Copyleaks
• Quetext

Let’s see the pros and cons of each one.

#1 Grammarly Plagiarism Checker

Grammarly’s plagiarism checker is renowned for its accuracy and integration with their powerful writing assistant. It checks texts against billions of web pages and ProQuest’s academic databases.

Grammarly’s online plagiarism checker for free gives detailed plagiarism reports with a similarity percentage and links to sources. It also offers comprehensive grammar and spell checks as well as style and tone adjustments.

Pros:

• Highly accurate plagiarism detection
• Protects your data

Cons:

• Only 10,000 words in the free version

#2 QuillBot Plagiarism Checker [$8.33/Month]

QuillBot not only provides plagiarism checking but also offers paraphrasing tools to help refine and improve your writing. If you’re using the plagiarism tool for academic purposes, it also highlights missing citations.  The catch is, you have to pay a subscription fee to use it.

The tool accepts a variety of file types including .txt, .pdf, .docx, and .html.  It offers instant plagiarism reports and analysis. If you want to save reports, you can also create an account with them.

Pros:

• It supports more than 100 languages. 
• Workplaces can get a cheaper price if they place more than five orders. 

Cons:

• You’ll have to pay $19.95 if you’re not on an annual plan. 

#3 PlagiarismDetector.net

PlagiarismDetector.net offers a straightforward and user-friendly interface that provides quick and reliable plagiarism checks. You can upload a URL or file to check plagiarism online, so you can skip the copy/paste hassle! 

The plagiarism detector produces authentic results in real-time without flagging unreasonable duplication. They employ “deep search” technology to achieve this. They have three paid plans available for instructors or other professionals who need to scan more than 25,000 words per month.

Pros:

• It supports multiple languages including Spanish, German, and French. 
• You can give feedback. 

Cons:

• It supports only 1,000 words in the free version. 
• There are ads and pop-ups on the page. 

#4 Scribbr Plagiarism Checker

Quite popular among students, Scribbr has partnered with Turnitin to offer a highly accurate plagiarism checker. The tool scans your writing against a large database of scholarly articles to produce a detailed similarity report. Their database includes 99 billion web pages and 8 million publications!

The detector offers live chat with plagiarism experts and an option for professional feedback. It supports over 20 languages including Dutch, Portuguese, and Italian.

Pros:

• The tool tells the domain, database, and the number of matching words for each source. 
• It scans your text for spelling and grammar errors. 

Cons:

• It’s much more expensive; and charges a per-use rate of at least $19.95. 

#5 Small SEO Tools Plagiarism Checker

This free plagiarism checker tool is part of a larger suite of free SEO tools. It’s particularly popular among bloggers and freelance writers. It offers sentence-level results with the sources flagged.

The plagiarism checker supports documents in multiple languages. You can check for plagiarism free of cost, but there’s a limit of 1,000 words per use, which isn’t ideal. It’s also prone to a little lag and takes time to produce the plagiarism report.

Pros:

• Completely free
• Has a WordPress plugin

Cons:

• Intrusive ads on the page
• May report false positives

#6 Duplichecker [$5/ Week]

Duplichecker has both, a plagiarism checker online for free and a paid version. It’s ideal for quick checks. It includes a grammar checker, which is an added benefit. The tool supports multiple file formats such as .tex, .txt, .doc, .docx, .odt, .pdf, and .rtf. 

Interestingly, this tool offers a “Make it Unique” option that helps you rephrase your writing to avoid plagiarism detection. While this feature won’t be useful for students, it’s a lifesaver for content writers and marketers!

Pros:

• Differentiates duplicate and unique phrases
• Supports seven languages 

Cons:

• Has a daily usage limit of 1,000 words
• Occasionally misses some sources

#7 Editpad Plagiarism Checker

Editpad’s plagiarism checker for students can be used for free. This tool’s robust detection algorithms use deep search and ProQuest technology to detect plagiarism quickly. The tool, along with others on the platform such as Sentence Expander and Thesis Statement Generator, can be quite handy for students.

Editpad Plagiarism Checker supports both text and URL input. While the tool is easy to use, it’s probably not ideal for any heavy lifting. If students, teachers, or bloggers need a quick plagiarism detector for free, this one works best.

Pros:

• Supports various file formats such as DOC, DOCX, TXT, and PDF
• User-friendly and to-the-point

Cons:

• Has a limit of 1,000 words
• Ads can be distracting

#8 EasyBib Plagiarism Checker 

EasyBib offers a comprehensive tool that not only checks for plagiarism but also helps with proper citation, making it ideal for students and educators. This plagiarism detector isn’t free, but it comes with unlimited grammar, citation, and formatting checks.

You can paste text or import papers from your computer and Google Drive to check for plagiarism online. The plagiarism tool is great at catching accidental plagiarism. If you’re looking for an advanced plagiarism checker that also checks grammar, spelling, and citations, this one is it!

Pros:

• Unlimited access to the Chegg citation generator
• Offers detailed feedback on plagiarism
• Has a library of educational resources

Cons:

• Requires a paid subscription
• Can be slow with large documents

#9 Copyleaks [$8.99/Month]

Copyleaks uses advanced AI and machine learning technologies to detect plagiarism in over 100 languages. It detects multiple forms of paraphrasing, performs image-based text plagiarism, and exposes attempts to deceive detection software. It’s used by universities and SEO firms alike, which speaks for its versatility. 

The Copyleaks plagiarism detector tool also offers cloud computing support and API access for developers. It generates comprehensive PDF reports and offers “recurring scans” that protect your work from plagiarism.

Pros:

• 20 pages per month for free
• AI content detection
• Scalability for businesses and institutions

Cons:

• Complex interface for new users
• Can be slow, taking 2–4 minutes to check 500 words

#10 Quetext [$8.80/Month]

While Quetext’s free online plagiarism checker tool isn’t very convenient, the upgrade is perfect for a student writing their dissertation. It lets you check 100,000 words per month and offers citation support. The tool does a contextual analysis of your writing while flagging plagiarism.

The plagiarism tool combines deep search technology with a wide database consisting of 35 billion websites, 20 million books, and 1 million journals. It is easy to use for students and supports multiple languages including French, Spanish, Italian, Portuguese, German, Arabic, and Russian.

Pros:

• Website citation generator and citation assistant
• Lets you pause your subscription

Cons:

• Allows only 500 words in the free version

Whether it’s academic integrity, content creation, or SEO enhancement, each tool we’ve listed offers unique features for different users. We hope this list of the ten best free plagiarism checkers helps you find the right one!

Remember, while these tools provide a great first line of defense against plagiarism, human expertise is invaluable. For that professional edge, consider PaperTrue’s expert editing and proofreading services. Our experts will refine and perfect your documents, ensuring they’re completely plagiarism-free!

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Tanvi

With a foundation in Life Sciences, Tanvi enjoys curating technical writing tips tailored for ESL students. When she's not translating complex concepts into bite-sized nuggets, she can be found playing with dogs or painting landscapes.