Home > Knowledge Base > Blogs > Top plagiarism detection tools

Top plagiarism detection tools

Published by at March 13th, 2025 , Revised On March 17, 2025

Plagiarism, even if unintentional, can significantly damage the credibility of your work. It makes you lose your academic integrity and, in some cases, can even drag you into legal trouble.

Therefore, just relying on manual checks or instincts is not an option. It’s better to use modern AI plagiarism detection tools to verify the authenticity and originality of your work. Whether you are a student, educator, or professional writer, plagiarism is unacceptable in every field. 

To help you maintain the integrity of your content, here are some of the most reliable and effective plagiarism detection tools you can try. We have tested thousands of popular online plagiarism detectors and shortlisted these five, which you can rely on to detect duplicate content and uphold authenticity.

SmallSEOTools Plagiarism Checker

Small SEO Tools Plag Checker

SmallSEOTools.com has the best and most reliable online plagiarism checker. It is free and can be used to find duplicate content in your writing. The tool scans and compares your work with published online resources to highlight copied content. 

This plagiarism checker scans text online and gives you a percentage uniqueness score. It also highlights copied sections to help you distinguish between original and copied text.

Moreover, this free plagiarism checker online provides links to sites where similar content is already available. Thus, you can use these insights to revise and refine your content while maintaining its credibility and originality. This tool greatly benefits the educational sector, especially students, researchers, and teachers.

Pros

  • Free to use with premium upgrades
  • Supports multiple languages and file formats
  • Scans a vast database for plagiarism
  • Provides detailed plagiarism reports

Cons

  • Free version has lower word limit

Turnitin

Turnitin

Turnitin is an advanced plagiarism detector tool used as an academic integrity standard in most educational institutes. Therefore, you can rely on it to check for AI-generated or duplicated content in your writing. 

The best thing about this tool is that it can seamlessly integrate into your existing system and give precise, real-time feedback on your work. Moreover, it also suggests actionable insights you can follow to improve the quality and credibility of your text.

Pros

  • Accurately detects AI-generated and plagiarised content.
  • Integrates with 100+ educational platforms.
  • Provides real-time feedback for better writing.
  • Supports various assessment types.

Cons

  • AI detection may need manual verification.
  • High subscription costs for smaller institutions.
  • It may have false positives in reports

Looking for a Assignment writing expert?

  • Relevant data collection
  • Research gap findings
  • 100% Plagiarism Free
  • Qualified writers
  • Low Prices
  • Proofreading
ad image

Grammarly

Grammarly

Grammarly’s plagiarism checker scans and compares your work against billions of published online resources to ensure it doesn’t contain a single instance of duplication. The tool then highlights potentially plagiarized text and suggests refining and eliminating it. 

You must paste the text directly or upload the file in the given box. It will immediately fetch the data, analyse it, and give you an originality score. Moreover, it provides citation recommendations to help you fill the gaps in your content. 

However, features make its plagiarism detector go beyond a simple duplication checker. It also assists you with ensuring clarity, conciseness, and AI content identification. 

Pros

  • Detects plagiarism accurately.
  • Checks against billions of web pages.
  • Offers citation suggestions.
  • Provides real-time writing feedback.
  • Trusted by universities and professionals.

Cons

  • Limited free version.
  • May flag false positives.
  • Premium version is costly.

PlagScan

PlagScan

PlagScan is one of the market’s most user-friendly and efficient plagiarism detectors. It works with different file formats and provides detailed reports on your content’s uniqueness and similarities.

It allows you to download the reports as PDFs on your device, share them as you wish, or view them online and make adjustments on the spot.

What I cherish about this tool is its commitment to security. It doesn’t save or export any of the shared content. Therefore, you can confidently use it to check even the most sensitive information.

Pros

  • Supports various file formats
  • Provides detailed plagiarism reports
  • Keeps documents private and secure
  • Integrates with LMS and API
  • Easy to use

Cons

  • Free version has limits
  • No AI writing suggestions

PlagAware 

Plagaware

PlagAware is a professional plagiarism detection tool designed for universities, businesses, and users. The tool scans your content against over 70 billion online sources. Not only this, but it also matches your text with private reference documents to detect copied or paraphrased content. 

After a thorough check, it provides detailed reports on your content, highlighting all potential matches. Thus, it helps you ensure optimum originality in your writing. 

The tool is known for its accuracy and efficiency. Verifying and processing the content under strict data security standards usually takes 10 minutes.

Pros

  • Highly accurate plagiarism detection
  • Scans against billions of sources
  • Detailed, easy-to-read reports
  • Secure, GDPR-compliant data handling

Cons

  • No free complete plagiarism check
  • Pricing may not suit occasional users

Frequently Asked Questions

Plagiarism detection tools feature advanced algorithms that compare your text with thousands of published online resources, such as webpages, academic papers, blogs, etc. Thus, they identify and highlight the similarities in your content. 

The key features that a reliable plagiarism detector must hold include accuracy, access to large databases, support for multiple languages, and detailed plagiarism reports.

Yes. Advanced plagiarism detectors like SmallSEOTools and Turnitin can detect directly copied, paraphrased, or even AI-generated content. 

Most free tools provide basic functionality and may lack accuracy or access to comprehensive databases compared to premium options. But they are indeed reliable for basic content verifications. So, as a student or freelancer, you can rely on free plagiarism checkers.

About Ellie Cross

Avatar for Ellie CrossEllie Cross is the Content Manager at Essays.uk, assisting students for a long time. Since its inception, She has managed a growing team of great writers and content marketers who contribute to a great extent to helping students with their academics.

You May Also Like