Published 

February 23, 2025

10 best plagiarism checkers to check plagiarism accurately

Are you looking for such plagiarism detection tools? Then, you are in the right place. Here, we will familiarize you with the top 10 plagiarism checker tools you can trust

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Table of contents

Plagiarism has always been a serious concern for content creators, students, and researchers. Even a few instances of intentional or unintentional plagiarism can ruin their work and affect their reputation.

Therefore, no matter what, when you create a piece of content, avoid all sorts of plagiarism. And do you know what's the best weapon against plagiarism? Plagiarism checkers.

A powerful and dependable plagiarism checker can help you quickly identify duplicate segments in your content and ensure its uniqueness.

Unfortunately, not all plagiarism detectors are worth relying on. They either don't detect plagiarism at all or show false positives. Therefore, you must avoid them and use the best plagiarism detectors, famous for their accurate and detailed reports.

Are you already looking for such plagiarism detection tools? Then, you are in the right place. Here, we will familiarize you with the top 10 plagiarism checker tools you can trust.

Here they are!

1. PlagiarismChecker.ai

PlagiarismChecker.ai is an advanced AI-powered plagiarism checker that helps users quickly detect similar content in their work. It's ideal for almost everyone, including students, researchers, bloggers, and marketers.

This plagiarism detector leverages AI technology to scan, analyze, and compare text with a vast database to search for similar instances. If it finds identical content on any other platform, it will instantly highlight your text and indicate plagiarism.

Apart from the AI algorithms, it has a broad database of billions of web pages, eBooks, offline documents, journals, and archives. This database makes it one of the best plagiarism detectors in the world. Thankfully, this tool is not confined to a specific industry so everyone can access and use it.

Pros

  • AI-powered plagiarism detection
  • Fast and accurate tool
  • Detailed and understandable reports
  • User-friendly interface

Cons

  • Limited features on the free version

2. Grammarly

Grammarly! It's pretty popular among writers, bloggers, marketers, students, scholars, etc. Millions of people use this tool every day. However, many just use it to check and correct grammar errors in their content. They don't know that it provides another outstanding utility: plagiarism-checking.

Yes, you can use Grammarly to check for plagiarism as well. Interestingly, its plagiarism checker is also quite reliable. If you want an all-in-one tool, Grammarly is the best option for you. It also uses a vast database to compare the text and identify similarities.

However, this feature is only limited to users with premium subscriptions. If you don't have Grammarly's premium subscription, you cannot access this utility.

Pros

  • Wide database
  • Modern plagiarism-checking algorithms
  • Proofreading facility
  • Easy-to-use

Cons

  • Less effective than Turnitin and other tools
  • Subscription required

3. Turnitin.com

Turnitin is the most trusted and arguably the best online plagiarism detection tool. Due to its reliability, it is trusted by almost all academic institutes, journals, and publishers worldwide.

What sets Turnitin apart from the other plagiarism detectors is its massive database. Regardless of what online platform a piece of content is posted or submitted on, if your text is similar to that, it will show plagiarism in your content.

Additionally, Turnitin uses modern algorithms to scan and compare text. Due to its database and modern algorithms, it can spot even subtle forms of plagiarism. For instance, it can even detect paraphrased content and show plagiarism.

Although it's an excellent tool for plagiarism-checking, it's not limited to academic institutes. Individuals and even organizations cannot purchase its subscription. 

Therefore, if you are a marketer, content creator, or website owner, unfortunately, this plagiarism checker is not for you.

Pros

  • Comprehensive database
  • Unmatched accuracy
  • Detailed plagiarism reports
  • Integrates with LMS platforms
  • Trusted by everyone

Cons

  • Limited to the academic world
  • No free version is available

4. SmallSEOTools

SmallSEOTools is a famous platform for plagiarism checking. Its free plagiarism detector is second to none. Due to its precise and dependable plagiarism reports, millions of bloggers, students, and website owners trust SmallSEOTools. Whenever they want to check for plagiarism in a piece of content, they prefer this platform for that.

This powerful tool also uses advanced plagiarism-checking methods to analyze and compare the text to identify instances of plagiarism. These algorithms ensure reliable and accurate results and gratify users' needs.

Moreover, SmallSEOTools provides a user-friendly and intuitive interface. It lets users quickly check their text for plagiarism and fetch detailed and downloadable plagiarism reports to make accurate and informed decisions.

Pros

  • Free version available
  • Easy to use
  • No registration needed
  • Works on all devices

Cons

  • Ads on the website
  • Not 100% reliable for academic content

5. Scribbr

Scribbr is a well-known and appreciated platform among students. It deserves all the appreciation as it's one of the most trusted platforms for plagiarism-checking. Those who cannot access and afford Turnitin can use this tool to check their content for plagiarism.

Scribbr uses sophisticated algorithms, a vast database, and modern plagiarism-checking techniques to provide accurate results to users. This tool is powered by Turnitin itself. Therefore, it rarely disappoints users.

Unlike many similar platforms, Scribbr offers several other outstanding tools. For instance, it provides an AI humanizer, grammar checker, AI detector, and AI proofreader. These tools can help you craft well-refined and unique content that can establish trust and authority in your audience.

Pros

  • Reliable plagiarism reports
  • No false positives
  • Multiple tools available

Cons

  • Not ideal for casual writers
  • Requires document upload

6. DupliChecker

DupliChecker is an incredible platform that offers users a wide range of free tools to assist them in performing various tasks. For instance, it provides a free paraphrasing tool, a reserve image search tool, a grammar checker, an AI detector, a plagiarism detector, and many more.

Interestingly, all its tools are quite helpful and dependable. For instance, its free plagiarism checker can help you easily detect almost all sorts of plagiarism. Like all the other tools mentioned in this article, it also uses modern algorithms and a vast database to spot instances of plagiarism in the given text.

Additionally, it's free to use. No matter how many files you want to check, you never need to register or pay a single penny. And unlike many free plagiarism checkers, it doesn't fail to detect plagiarism.

Pros

  • Free version available
  • Easy to use
  • Percentage-based plagiarism reports
  • Supports multiple formats

Cons

  • Limited word count per file
  • Show Ads

7. Copyscape

Although it's a paid plagiarism checker with no free trial version or facilities, Copyscape is the favorite tool of many writers, bloggers, and website owners. This plagiarism detector specializes in identifying duplicate segments in the website content.

This plagiarism detection tool has the trust of many well-known platforms, including The Guardian, BBC, Time, Forbes, The Wall Street Journal, etc. So, you can also trust this tool for your website.

However, although it's quite reliable for website content, it's not good enough for academic content. If you want to check academic content, avoid using this tool, as it will waste your time, and you won't get precise plagiarism reports.

Pros

  • Great for website content
  • User-friendly interface
  • Accurate reports

Cons

  • No free version
  • Not great for academic content
  • Quite expensive

8. QueText

QueText is an outstanding plagiarism-checking platform. It uses advanced algorithms to interpret the text and search for similar instances on the web. This tool is accurate and dependable, and it can be used by everyone, from students to teachers to bloggers.

It compares the provided content with a vast database of academic papers, journals, publications, and websites to catch duplicate segments and perfectly highlight matches.

Like many other platforms, it's also not free to use. It provides users with a limited number of free words. If you want to check more words, you must buy its premium subscription.

Pros

  • Deep search feature
  • Suitable for both academic and website content
  • Supports multiple file formats
  • Accurate reports

Cons

  • Limited free search facility
  • Expensive for individual users

9. Copyleaks

Like DupliChecker, Copyleaks offers multiple advanced and feature-rich tools to facilitate users. Moreover, this platform is designed for everyone, including creators, students, bloggers, and SEO experts.

Copyleaks also compares the text with a database of trillions of web pages, journals, and documents. That's why it rarely fails to provide accurate plagiarism reports. 

Moreover, it uses machine learning technology to spot paraphrased text and boost accuracy.

Additionally, you can integrate it with the LMS platform and get detailed similarity reports in real-time. However, it's also not free to use. Although you can check a few files with limited word count for plagiarism with this tool, after that, you will have to pay to continue using it.

Pros

  • AI-powered plagiarism detection
  • Detailed reports
  • LMS integration

Cons

  • Expensive for individuals
  • Can show false positives

10. QuillBot

QuillBot is known for its outstanding paraphrasing tool. However, the paraphrasing tool is not the only thing QuillBot offers. Instead, it provides a few other exceptional tools as well. And the plagiarism checker is one of them.

This tool benefits students and professional writers who want to avoid plagiarism and ensure uniqueness. It's a convenient and helpful tool for all who want to find and remove plagiarism from the text instantly.

Pros

  • Multiple tools available
  • Easy to use 
  • Accessible for everyone
  • Suitable for professional use

Cons

  • No LMS integration
  • Limited database

Plagiarism checkers help students and writers quickly spot all sorts of plagiarism in their text. They are very beneficial for all creators who want to avoid the harmful consequences of plagiarism and build a solid reputation in their domains. 

However, not all plagiarism detectors are worth relying on. Therefore, you must pick the best plagiarism checkers to get accurate and detailed plagiarism reports.