Online Plagiarism Checkers: Features, Pros, and Cons

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Plagiarism checkers are powerful tools designed to analyze written text, compare it with diverse databases, and provide the writer with detailed reports. Plagiarism checkers help to vet if a piece of text is original or unique from other published texts on the internet. While some plagiarism checkers work as standalone applications, others are web-hosted and popularly called online plagiarism checkers.

plagiarism checkers

Online plagiarism checker help to check the originality of written content. Some require signup before use, but most don’t require user signup. Also, some are fermium tools that need payment before granting access; others (most) are free to use, although functionality is limited. Please read through this article carefully to see the top 15 online plagiarism checkers, their features, pros, and cons, and thus decide on the online plagiarism checker that best suits your need and your client’s demands.

Online Plagiarism Checkers: Features, Pros, and Cons

1. Scribbr

Scribbr is one of the top online plagiarism checkers with a limited free and premium version. Scribbr has a high accuracy rate compared to other free plagiarism tools. One uniqueness of Scribbr is the ability to detect plagiarism in heavily edited texts.

Pros:

  1. Does not store or sell users’ documents.
  2. Has a limited free version.
  3. The premium version delivers on the promise and is affordable.

Cons:

  1. You need Scribbr’s premium version to know the scanned document’s precise similarity score and view the entire report of the scanned copy.

2. Quetext

Quetext plagiarism checker is the best choice for students, writers, and teachers. Quetext uses DeepSearch Technology to scan submitted texts and provide highly accurate results. Quetext can identify near-match or exact text matches against internet sources. Also, Quetext can place texts that have been deleted or altered. Quetext can generate citations in MLA, APA, and Chicago formats.

Pros:

  1. Doesn’t store documents in its database.
  2. Has a built-in citation assistant to add missing citations.
  3. Affordable monthly subscription of $8.25
  4. Supports available options.

Cons:

  1. The monthly subscription covers a limited number of checks and text volumes; it runs out after a few reviews.
  2. False Positives Problem: May report partial matches in scanned documents as plagiarism.
  3. It is not effective in checking plagiarism in scholarly articles or sources.

3. DupliChecker

DupliChecker is one of the best online plagiarism checkers for checking texts under or around 1000 words. DupliChecker has a free version with an affordable premium subscription option. You can upload 1,000 words per scan on DupliChecker free version and 25,000 words if you’re a paid subscriber. The DupliChecker paid subscription plan is pegged at $10 every month.

Pros:

  1. Uploaded documents aren’t saved or sold.
  2. Gives user-friendly reports.
  3. You can check 1,000 words per time for free using the free plan.

Cons:

  1. No color coding for different sources.
  2. Poor plagiarism detection for some texts.
  3. The interface has numerous obstructive third-party ads and diverting ads promoting other Duplichecker services.
  4. Doesn’t perform well with edited text.

4. Small SEO Tools

Small SEO Tools is another top online plagiarism checker like Duplichecker. Small SEO Tools, like Duplichecker, can check plagiarism for 1,000 words per scan for free. Small SEO Tools provide options to run multiple checks by completing CAPTCHAs. The plagiarized text is colored. The sources (references) to the plagiarized text are provided. If you’re concerned about the security of your data, you can contact Small SEO Tools support to erase your data. Hence, the tool respects users’ privacy.

Pros:

  1. Has a free version (1,000 words per scan).
  2. Has various options for uploading documents.
  3. Doesn’t store users’ uploaded documents.

Cons:

  1. Provides elementary plagiarism detection service (especially for the free plan)
  2. Examines individual sentences rather than full texts.
  3. The user interface is full of ads, making the site slow and somewhat uncomfortable.

5. PrePost SEO

PrePost SEO online plagiarism checker has a limited free and premium version. The PrePost SEO free version checks plagiarism for only a 1,000-word count per document. However, the PrePost SEO premium version checks plagiarism for over 2,500-word count per document. Upgrade to the PrePost SEO for $10 – $45 per month. Once a PrePost SEO subscriber or user, you benefit from live support and can use the support request form to get quicker solutions to your issues.

Pros:

  1. Has a free plan which scans and detects plagiarism in 1,000 words per scan.
  2. Provides live support option.
  3. Has a citation assistant.

Cons:

  1. Detects a low proportion of plagiarism.
  2. Uses only one-color coding to differentiate different sources.
  3. There are too many ads on the website.

6. Grammarly

Grammarly may be considered a mid-top-line online plagiarism checker suitable for improving communication efficiency, business growth, and error-free copy. Grammarly is also an automated proofreader with access to a vast database. Grammarly has access to billions of web pages and ProQuest’s databases.

Pros:

  1. The plagiarism-checking service is ok.
  2. Has a citation and language assistant.
  3. Doesn’t share or sell your uploaded documents with third parties.

Cons:

  1. The plagiarism checker only works for paid Grammarly subscribers.
  2. Uses one-colour coding for different sources.
  3. Shows a low percentage of plagiarism with its free version.

7. Plagiarism Detector

The Plagiarism Detector tool falls in the family of Duplichecher, Small SEO Tools, PrePost SEO, etc., enabling free scans of about 1,000 words per document. However, it has a paid plan which allows scans of up to 25,000 words per document. What sets Plagiarism Detector is its subscription model. Compared to many, users can subscribe weekly, monthly, or yearly.

Plagiarism Detector has a high success rate in finding matches in the uploaded documents and reporting them. Also, Plagiarism Detector support is excellent, and users can quickly get problems fixed through request forms. Fill out the request form and wait for feedback in a few minutes.

Pros:

  1. The limited free version can scan and report plagiarism detection in 1,000-word documents.
  2. Doesn’t sell or store users’ documents in its database.

Cons:

  1. Difficulty in matching text with sources in the report.
  2. Develops technical issues with lengthy documents.
  3. Use one-color coding to highlight different sources.

8. PaperRater

PaperRater, aside from checking plagiarism, checks grammar, style, and spelling to improve the quality of written content. With PaperRater, you can compare your work against over 10 billion Internet documents to ensure your paper is plagiarism-free.

Pros:

  1. Easy to use.
  2. Checks beyond plagiarism; grammar checks, spelling checks, style checks, all-inclusive.
  3. Writing suggestions feature.

Cons:

  1. You must subscribe to access its advanced features.

9. Plagiarism Checker X

Plagiarism Checker X is another top online plagiarism checker suitable for students, bloggers, researchers, and writers. Plagiarism Checker X is available in over 80 countries, including the United Kingdom (UK), Germany, Canada, and Indonesia. Hence, the tool is available in French, English, Italian, German, Portuguese, etc. Also, Plagiarism Checker X supports various file types and compares two documents for similarity. With this plagiarism, too, you can get a detailed plagiarism report compared to other tools.

Pros:

  1. Supports multiple file formats like DOC, RTF, PDF, etc.
  2. Is multilingual.
  3. Does side-by-side comparison of documents.
  4. Has a user-friendly interface.

Cons:

  1. The free version supports lesser word checks.

10. Copyleaks

Copyleaks is a great tool that can help you easily detect plagiarism and find paraphrased or similar content. Copyleaks is available in over 100 languages. The tool employs advanced algorithms to identify character and ink replacements, checking plagiarism better than other tools.

Copyleaks secures users’ uploaded content using strong encryption and SSL connections to avoid theft or mutilation. After checking, it generates a detailed anti-plagiarism report to help the user see and fix the areas plagiarized. Copyleaks is suitable for writers, agencies, companies, students, and publishers, among others.

Pros:

  1. Supports multiple file format upload.
  2. Critically analyzes documents for plagiarism (verbatim copying and paraphrasing).
  3. Available in various languages.
  4. Gives a similarity report of your uploaded document.

Cons:

  1. Has limited editing abilities.
  2. You must subscribe to access its advanced features.

11. Noplag

Noplag is a highly versatile tool that provides robust plagiarism detection and supports various types of academic writing. Noplag has a vast database of over 20 million sources and 100+ million publications. Also, Noplag can work as a proofreading tool. Noplay provides essay outline templates and other helpful writing guidelines.

Pros:

  1. Supports multiple file formats.
  2. Has an extensive database.
  3. Has additional features like spelling checks, etc.

Cons:

  1. You must subscribe to access all the features.
  2. Limited language support.

12. ProWritingAid

ProWritingAid is a versatile tool for plagiarism checking, style editing, and grammar checking and correction. This tool also provides videos, quizzes, in-depth reports, and articles to improve writing skills. ProWritingAid has three versions; ProWritingAidFree, ProWritingAidPremium, and ProWritingAidPremium+.

The ProWritingAidFree has 19 writing reports, edits of up to 500 words, and a summary report of key issues. ProWritingAidPremium provides integration with Chrome, desktop version, MS Word, etc. ProWritingAidPremium+ has all features of the free version with 50 plagiarism checkers.

Pros:

  1. Has an extensive database for plagiarism checking.
  2. It is integrated with writing analysis features.
  3. Supports multiple file formats.

Cons:

  1. Has limited sources.
  2. Advanced features are only available to subscribed users.

13. PlagScan

PlagScan is another plagiarism tool that checks the originality of content in various formats. This tool has valuable features like a document manager, an API, statistics, and author metrics. PlagScan’s features make it a perfect tool for writers. After checking plagiarism, PlagScan provides the user with a detailed plagiarism report in a document format.

Pros:

  1. Uses advanced databases and algorithms.
  2. Has customizable settings.
  3. Ensures document privacy.
  4. Has a user-friendly interface.

Cons:

  1. Operates on a subscription-based model.
  2. Has language limitations.
  3. Limited document formats.

14. Copyscape

Copyscape is a top-line plagiarism tool suitable for professionals. There are two versions to it: Copyscape premium version and free Copyscape. Copyscape Premium allows for file uploads and copy-pasting to a large body of texts. Besides, Copyscape helps website owners to show a banner to warn plagiarists, thereby providing more protection for the blog and content.

Pros:

  1. Easy to use.
  2. Has batch search option.
  3. Ensures content protection.
  4. Gives detailed plagiarism reports.

Cons:

  1. Has web-based limitations.
  2. Has limited database access.
  3. You must pay for its premium versions to access the advanced features.

15. iThenticate

iThenticate is a popular plagiarism checker among researchers, scholars, and publishers. This plagiarism tool has access to a broad database that allows it to provide thorough and reliable plagiarism and similarity reports.

Pros:

  1. Has a comprehensive database.
  2. Supports diverse file formats.
  3. Has customizable settings.

Cons:

  1. Not able to identify all types of plagiarism.

You may also like: Top 5 plagiarism Checkers that helps to make your academic life easier

Conclusion

Online plagiarism checkers are unique tools that can check the originality of your written work in a few minutes. So, if you’re a student submitting an essay, a writer publishing an article, or an educator grading assignments, online plagiarism checkers are your trusted allies in the fight against plagiarism. Embrace these tools and embark on a journey of originality and excellence in your writing endeavors.

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