Plagiarism isn’t always intentional, as it can also happen accidentally. However, even though it may not be deliberate, it will have significant academic repercussions. It can also become copyright infringement if your work is too similar to the source. Fortunately, it will never get to this point if you use the best plagiarism checker.
A simple search shows plenty of tools that claim 100% accuracy for detecting duplicate content. However, choosing a reliable service is better because your academic reputation is on the line. Today’s discussion focuses on ten popular plagiarism checkers and lists their pros and cons.
Keep reading to figure out which one you should use to ensure your assignments don’t contain similar content.
1. What is the Best Plagiarism Checker? Smodin Plagiarism Checker
Smodin’s Plagiarism Checker is a top choice among students and teachers. It will scan through billions of resources to ensure nothing resembles your work. It uses its extensive and ever-growing database and artificial intelligence (AI) to ensure your documents are plagiarism-free.
Pros:
- It can search for potential plagiarism in more than 100 languages, ensuring your content is truly plagiarism-free.
- It’s free to use, and you don’t even have to create an account. This way, you can try out our content duplication detector to see if it’s for you.
- You can see how many words match another material and the number of sources.
- There’s a separate tab for sources, which you can use to cite the sources. You can choose the citation style before pasting it in your document. If you create an account, use the auto-citation feature to save time.
- The Super Search and Google Scholar Search features analyze billions of websites and academic papers to ensure zero duplication.
- You can include and exclude URLs to improve accuracy and prevent false positives.
- The Text Comparison feature lets you manually compare reference texts with your document.
- There’s an AI detection tool to ensure your writing sounds natural, not like it’s from a generative AI tool.
- You never have to worry about your privacy, as Smodin doesn’t store your files in its database.
- The reports are downloadable and shareable.
Cons:
- You can only check up to 1,500 characters for plagiarism as a free user.
- The Google Scholar Search feature is only available if you create an account. Fortunately, you can create one for free.
2. Copyscape
Copyscape is one of the oldest plagiarism checkers available. It started in 2004 and is popular among writers, businesses, editors, teachers, students, marketers, and more.
Pros:
- You can compare your text with millions of other websites and receive a report with links to the source.
- It displays the percentage of your work that matches the original content.
- It highlights the text so that you know what to change.
- The Private Index feature lets you compare your work against your previous documents to prevent self-plagiarism.
- You can upload .pdf, .doc, .docx, .txt, and .rtf files that aren’t bigger than 16 MB.
Cons:
- It costs 3¢ for the initial 200 words in your document. For every additional 100 words, the plagiarism tool charges 1¢. In other words, this can become expensive as you scan multiple documents.
- There are reports of false positives among the tool’s customers.
- You cannot use the credits if they expire.
- Compared to the modern designs of other plagiarism checkers, the dashboard’s design feels old.
3. PlagScan
PlagScan, a plagiarism-checking tool from Germany, launched in 2009. In 2020, Turnitin purchased the company. However, starting on January 1, 2025, the service will no longer be accessible to single users. This is because they’re stopping private plans and preventing people from accessing their accounts.
Pros:
- It uses different colors to indicate how similar the text is to the source. Red means it’s a 100% match, blue indicates there are modifications, and green is for cited content.
- It lists the matching content and shows the source on the dashboard.
- You can download the plagiarism reports.
Cons:
- It cannot check for plagiarism if you use Japanese, Korean, or Chinese languages in your documents.
- Its feature set is lacking compared to what other plagiarism checkers provide to their user base.
- The service is closing down after 2024, so it will no longer be usable.
4. Quetext Plagiarism Checker
Quetext Plagiarism Checker has a three-step process to evaluate your work’s similarity with content already available online. Content creators, educators, and students use this service regularly.
Pros:
- It uses multiple colors to indicate the level of similarity.
- A Google Chrome extension lets you review the authenticity of a website’s content.
- The citation assistant ensures you don’t miss attributing the authors.
- It doesn’t save your files in their database.
- You can bulk-upload files to reduce the time it takes to scan multiple documents.
- The originality reports are downloadable.
Cons:
- As of October 2024, it only has support for 15 languages.
- The free version only lets you check up to 500 words.
- You need to switch to the Premium package to access all the features.
5. DupliChecker Plagiarism Checker
DupliChecker, launched in 2006, offers multiple text analysis and SEO features. One tool it provides is the plagiarism checker that helped thousands of happy customers.
Pros:
- The free version lets you scan up to 1,000 words.
- The interface is easy to use, ensuring you don’t have any technical expertise.
- It offers multiple subscription packages. The lowest tier starts at $5 weekly, which is handy for doing small plagiarism checks.
- You can customize the plans based on how many words you want to scan.
- It will never save the text you share or the files you upload.
Cons:
- It falls behind when it comes to multilingual support, as the tool can comprehend only seven languages.
- If you want to rephrase your work, it only supports English.
6. Scribbr Plagiarism Checker
Scribbr has a partnership with Turnitin, a popular software among academic institutions. It’s popular among students and teachers due to its features.
Pros:
- It offers an AI detector and an AI proofreader when you use the plagiarism checker service.
- It performs well in detecting synonym swapping, where you change the words to avoid plagiarism detection.
- This tool will scan billions of pages and publications to find matching content.
- You can compare your current assignment with your earlier files to ensure you are avoiding self-plagiarism.
Cons:
- There is no free version, and the cost is higher, as you need to pay per document.
- It only comprehends more than 20 languages, so the plagiarism checks may not be comprehensive. However, the AI proofreader and AI detector only work in English.
7. Grammarly Plagiarism Checker
Grammarly is a wonderful tool for students and teachers. It provides real-time feedback with the grammar checker. It also has an online plagiarism checker, improving its functionality.
Pros:
- Your data is safe, i.e., it doesn’t provide this information to other vendors.
- It shows the source with the matching content in multiple citation styles.
- You can cite generative AI content, but it doesn’t store your files.
Cons:
- You can’t get the plagiarism checker separately, so you need to pay for the entire plan.
- It only underlines the text when it detects plagiarism.
- You can only use its plagiarism-detecting service for documents in English. If you write in another language, you must use a different tool.
- When you use the browser extension or the desktop app, your device uses significant system resources and slows down.
8. Chegg
Chegg is a student-centric company that focuses on education technology. One of the tools it offers is the plagiarism checker.
Pros:
- You can scan your homework with the tool to check for plagiarism before submission.
- The user interface is simple.
Cons:
- The site doesn’t show the pricing until you create an account and use one of its features.
- There is no free version, only a 3-day trial.
9. PlagAware
PlagAware received several awards for its plagiarism detector in 2011 and 2016. This tool won’t take more than 10 minutes to find the data you’re looking for.
Pros:
- You need to pay for the first scan. Additional scans for the same file are free.
- It can access more than 70 billion messages to check for duplication.
- It uses colors to highlight copied content in your document.
- You never have to worry about your files as it doesn’t store them in its database.
- There is a free version, which can scan up to 10 pages.
Cons:
- The design feels dated when compared to other popular plagiarism tools.
- It cannot check for plagiarism if you use Japanese or Chinese in your content.
10. CopyLeaks
CopyLeaks is the last alternative on this list. It provides AI-powered plagiarism and content detection. This tool started in 2015 and helped several clients achieve their goals.
Pros:
- You can see the sources in your duplication report.
- The Google Chrome extension will scan and detect websites with AI content.
- It can understand generative AI content in over 30 languages.
- There is a separate package for only its plagiarism detection tool.
Cons:
- It can take a while to find the sources for your content. Also, the interface can feel slow at times.
- It becomes expensive if you only want to do a handful of scans, especially if the files are large.
How To Check Plagiarism With the Best Plagiarism Checker: A Simplified Guide
Here are the steps to check for plagiarism with Smodin:
- Pick your plagiarism software, which, in this case, is Smodin’s Plagiarism Checker.
- Paste the content of your document into the tool’s dashboard or upload your file.
- Enable Google Scholar Search and Super Search if you want to perform an extensive search.
- Use the Include URLs feature to check specific websites. The Exclude URLs feature can prevent false positives.
- Scan your file for plagiarism, and the tool will create a similarity report.
Review the report to see if any sites or documents have the same words as your file.
FAQ
This section answers questions about plagiarism checkers:
What is the most accurate plagiarism checker?
Smodin’s Plagiarism Checker is the most accurate checker for the following reasons:
- It compares your work with billions of websites and documents.
- It can understand more than 100 languages, ensuring it doesn’t miss anything.
- It does comprehensive scans to ensure your work is plagiarism-free.
- It comes with the auto-citation feature, so you don’t have to spend time including your sources.
Which plagiarism checker is safe?
Smodin’s Plagiarism Checker is safe, as it never stores your files or the text you share in our dashboard. We’ll remove such information and files, as user privacy is essential to us. Also, if you’re okay using the limited version, you don’t have to create an account with us.
Is Grammarly plagiarism checker accurate?
Yes, Grammarly’s plagiarism checker is accurate, as long as you only check in English. If you use other languages, this third-party tool won’t work properly. However, other tools, like Smodin’s Plagiarism Checkers, offer better accuracy.
Improve Your Writing With Smodin’s Free Plagiarism Checker
Plagiarism is a serious problem with dire consequences if you’re not careful. Why waste years of hard work to fail at the last minute because you didn’t check for content duplication?
Smodin’s Plagiarism Checker can detect all types of copying to keep your content safe. Moreover, when you sign up for Smodin, you get additional tools to avoid plagiarism quickly. For instance, the AI-powered rewriter can transform any text to pass the duplicate content test.
The AI content detector identifies writing patterns that resemble generative AI and highlights the sentences you must improve. In other words, it helps you to remove AI plagiarism and avoid the negative consequences. Wondering about the difference between paraphrasing and plagiarism? Clear it up with the AI paraphraser.
Create an account with Smodin’s best plagiarism checker to ensure accidental copying never affects your grades again!