Free Online Plagiarism Checker Tools

Plagiarism is a significant issue in academic and online settings, and online plagiarism checker tools help detect copied content. These tools help students, teachers, scholars, and website owners ensure content authenticity. With the increasing number of daily papers and articles, it’s difficult to manually check for plagiarism.

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However, sophisticated web crawlers and search-optimized tools have made it easier for publishers, writers, editors, students, and teachers to manage their lives. Top 10 plagiarism checkers are ranked based on accuracy, features, and reporting capabilities. In addition, this article also presents other other worthwhile options.

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16 Best Free Online Plagiarism Checker Tools – 2024

  1. Grammarly
  2. SearchEngineReports.net
  3. PREPOSTSEO
  4. EduBirdie
  5. Quetext
  6. SmallSEOTools
  7. PlagTracker
  8. Linguix
  9. EasyBib
  10. Plagiarismdetector.net
  11. Dupli Checker
  12. Plagiarisma
  13. ProWritingAid
  14. Scalenut

1. Grammarly

Grammarly is a popular tool for checking grammar and plagiarism, detecting it from over eight billion web pages. It allows batch search, provides plagiarism alerts when text matches online or database content, offers various writing styles, grammar, vocabulary, and syntax suggestions, and provides an instant report on duplication issues.

Grammarly calculates the overall originality score for your document and keeps your writing private.

2. SearchEngineReports.net

SearchEngineReports.net is a plagiarism tool that can check over 2000 words of content by pasting the text, entering a URL, or uploading files from Dropbox or a local drive. Also, it checks grammatical errors in the content and shows plagiarism in percentages, allowing users to compare duplicate content with similar ones on the web.

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Plus, it provides sentence-wise results and allows viewing matched results. It also features a highlighted document view and helps rewrite plagiarized content. SearchEngineReports.net is a great tool for authors, reporters, bloggers, teachers, students, and professors, as it supports 2000 words per search and offers a highlighted document view.

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3. PREPOSTSEO

Pre Post SEO plagiarism checker that uses a deep search algorithm to provide instant plagiarism scans for your work. It has both the free and premium versions. Whereas the free version supports up to 1000 words, the premium package supports up to 25,000 words per search. Plus, the premium version supports multiple file uploading at the same time and supports APIs for integration with applications.

Pre Post SEO is suitable for multiple users and offers features 24/7 customer support, deep search, and API support. The basic tool allows users to upload files or copy-paste them onto a text box for analysis. It recognizes doc,.docx,.pdf, and.txt files and also supports other languages. If you are a first-time visitor,  you can get 500 words scanned, while longer articles can be checked for free with a maximum of 200 queries.

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The plagiarism results page is basic, providing a dashboard with percentages of plagiarized content, unique content, exact phrase match, and paraphrase match. The free version only picks up 5% of sample text from an academic journal copied word for word, while the premium version promises more accurate and faster results.

4. EduBirdie

EduBirdie is a free online tool that allows users to check academic and website content for plagiarism. Using this tool, you can paste content or upload documents, and can also hire editors for rewriting or editing at a rate of $13.99 per page.

EduBirdie is targeted at students and teachers and offers features such as essay, resume, and website content checks.

5. Quetext

Quetext is an advanced plagiarism checking tool for students, teachers, writters, and bloggers. It is an affordable and offers a free trial of 500 words, followed by a paid version of $8.25 per month, which allows users to check up to 100,000 words.

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Quetext detects more plagiarism (49% on average) than any free tool, but it’s unable to match each source text fully to a single source. This tool’s report is straightforward to understand and provides a useful overview, but different sources are not highlighted in different colors, making the report somewhat difficult to read.

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Quetext offers has a simple interface and the ability to upload documents for scanning. It provides a similarity percentage and highlights potential issues.

6. SmallSEOTools

SmallSEOTools is a free tool for website owners to check plagiarism, spell check, rewrite articles, count words, and change text cases. It supports various file formats including PDF, RTF, Doc, Docs, Tex, and Txtand.

It also offers domain analysis, website tracking, backlinks, and keyword analysis. Available on Google Play, MacStore, and App Store, it scans up to 1,000 words per search and includes webpage URLs. Unfortunately, the tool detects a small fraction of plagiarized content and highlights matched text in one color.

7. PlagTracker

PlagTracker is a free online plagiarism checking tool that offers multiple language support, a large academic paper database, and easy plagiarism reports.

It helps publishers, academicians, and site owners verify original content before publishing, ensuring it is free to use. The tool is ideal for publishers, academicians, and site owners.

8. Linguix

Being an AI writing tool, Linguix offers grammar verification, paraphrasing, and plagiarism checking functions. It is available for free or as a business plan. Linguix’s features include spell and grammar check, team style guide, AI-based paraphrasing, content quality score, multi-lingual support, and AI-powered paraphrasing.

It is easy to use and can serve as a plagiarism checker if combined with its core content-enhancing features.

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9. Copy Leaks

Copyleaks is a top plagiarism checker that uses over 100 languages and performs extensive searches across the internet and databases to identify duplicate content.

It offers comprehensive reports, automated grading, integration with MS Word, Google Docs, code plagiarism checking, and crosschecking against online resources and private databases.

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10. EasyBib

EasyBib Plus plagiarism tool provides all-in-one support to cover all your bases. The premium version of the software covers more futures.

With a single scan, you’ll receive personalized feedback to help identify potentially missing citations and help improve your sentence structure, punctuation, grammar, and more.

11. Plagiarismdetector.net

This online plagiarism detection tool allows users to check up to 1000 words of unique content for free using the basic version. However, the Pro version has no word limit and no ads and is available in Student, Institute, and Enterprise categories.

The app uses an advanced algorithm to search for duplicate content and analyzes content based on word choice, lexical frequencies, and matching phrases. Also, it supports documents in Txt, Doc, and Docx formats and offers features like deep search, URL/file uploading, real advertising, multiple file format support, and PDF downloads.

12. DupliChecker

If you are a student and want to ensure academic integrity, then Duplichecker is for you. This user-friendly online plagiarism checker allows users to analyze 1,000 words of text per search and upload files or URLs to check plagiarism for specific sites.

The tool displays a donut chart of plagiarized vs. unique content and related meaning, highlighting similar content and allowing users to download results as PDFs. It supports various file formats and offers a paraphrasing tool for removing plagiarism.

However, it has some drawbacks, including distracting ads, a low level of detection, poor performance with edited text, and no color coding for different sources. Another drawback is that DupliChecker’s website is full of ads.

13. ScaleNut

Scalenut is a powerful content planning and management tool with plagiarism checking capabilities. It ensures content is plagiarism-free, grammatical error-free, factual inaccuracies-free, and optimized for scale. The AI-powered tool aids in content planning and research, providing keyword plans for blogs and articles. Scalenut also offers efficient competition analysis. It offers SEO optimization, SEOSERP analysis, and a critique mode. Scalenut is a reliable content marketing tool for businesses, freelancers, and agencies, enabling them to create high-quality content that is ready to rank and factually correct.

Also Read: 21 Best Online Free PDF to Word Converting Tools

14. Plagiarisma

Plagiarisma is one of the best free online plagiarism checker tools out there. It is an online plagiarism checker that supports multiple languages and checks content against a wide range of sources on the web.

15. Check Plagiarism.com

Check-plagiarism.com is a citation generator and has a 1,000-word upload limit. The downside of this tool is that it struggles to match text with sources in the downloadable report, highlights different sources in the same color, and scans sentence by sentence.

16. Plagium

Plagium is a free plagiarism checker that detects plagiarized content in text and URLs. It does this by dividing the text into snippets and comparing them to online sources. Plagium has a text box with a maximum of 1,000 characters and offers Quick Search and Deep Search options.

However, it does not provide a percentage of how much content was plagiarized. Plus, Plagium offers plans that bill users for every page searched. Similar to Turnitin, it highlights parts of the document where the software has detected duplicate content online. It also provides you with the links to the online source.

17. ProWritingAid

ProWritingAid is a grammar and style checker with plagiarism checking capabilities. It offers 60 annual plagiarism checks, free access to a writers resource library, and in-depth reports. This tool can be integrated into Microsoft Word, Google Chrome, Google Docs, Firefox, and has no word count limits. It aids creative, business, and academic writing.

Conclusion

Online plagiarism-checking tools like Dupli Checker, SmallSEOTools, and Plagiarisma are suitable for website content checks and students and teachers. These tools detect copied content and ensure authenticity in academic and online settings. The top 13 plagiarism checkers are ranked based on accuracy, features, and reporting capabilities.

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