Checking the uniqueness of written content is crucial across various fields of writing, from bloggers and marketers to teachers, students, and researchers. It's particularly important to use a plagiarism checker tool when working with writers to ensure that submitted content is not duplicated and avoid any negative SEO consequences.
To help with this task, we've compiled a list of the best plagiarism checkers available. Whether you're looking for a free tool for occasional use or a paid solution for regular usage, there's an option for you on this list.
It's worth noting that plagiarism is defined as copying someone else's content or images, and it can have serious consequences in terms of credibility and reputation. With the help of a reliable plagiarism checker, you can ensure that your content is original and avoid any potential issues.
1. Grammarly

When it comes to online plagiarism checker tools, Grammarly is undoubtedly one of the best options available. It's a popular tool among writers who need to quickly check whether their content is original or copied from other sources.
Not only is Grammarly useful for individual writers, but it's also a great tool for professors who need to check the originality of research papers that may have been copied from multiple online sources. As seen in the above screenshot, the plagiarism feature of Grammarly is easy to use and highly effective.
In addition to its plagiarism checking capabilities, Grammarly is a multi-feature tool that can also help webmasters with checking the grammar and spelling of their content. Having used Grammarly for a while, I highly recommend it to anyone who wants to ensure the originality and quality of their written work.
Features:

- Grammarly checks for grammar and spelling mistakes in real-time, making suggestions to improve your writing.
- Grammarly's plagiarism checker tool can help detect instances of content copying and suggest ways to rewrite content to make it original.
- Suggests synonyms to improve your vocabulary and make your writing more engaging.
- It can analyze your writing style and suggest changes to improve readability, tone, and overall effectiveness.
- Allows you to set goals for your writing, such as audience, tone, intent, and domain, and provides suggestions to help you achieve those goals.
- Grammarly's AI algorithm analyzes your writing and provides personalized suggestions based on your writing style, strengths, and weaknesses.
- Offers a browser extension that can check your writing across different platforms, including email, social media, and online forms.
- Offers a mobile app that allows you to check your writing on-the-go, whether you're sending a text message or writing an email.
- Integrates with a variety of other tools, including Microsoft Office, Google Docs, and various content management systems, making it easy to use across different platforms.
Pricing:

- Free
- Start at – $15.00 per month
2. Unicheck

Unicheck is an online plagiarism detection software designed to help educators and students ensure the originality of their written work. The software is designed to check text documents and academic papers for any signs of plagiarism, making it a valuable tool for academic institutions, businesses, and individuals who want to maintain high standards of integrity in their writing.
Unicheck uses an advanced algorithm to scan texts for similarities with online sources, previously submitted papers, and other documents in its extensive database. The software is capable of detecting even the slightest similarities between texts, making it a highly accurate plagiarism checker.
One of the unique features of Unicheck is its ability to provide detailed similarity reports, highlighting not only the parts of the text that match with other sources but also giving suggestions for how to rewrite those sections to make them original. This feature helps writers understand how to avoid unintentional plagiarism in the future.
Unicheck also offers integration with popular Learning Management Systems (LMS), making it easy for teachers to check student assignments for plagiarism. The software is compatible with various file formats, including Word, PDF, and HTML, making it a versatile tool for checking the originality of different types of documents.
Features:

- Unicheck uses advanced algorithms to scan text documents and academic papers for plagiarism. It compares the text with a vast database of sources, including online resources and previously submitted documents, to detect similarities.
- Provides detailed reports on similarities found in the text, including highlighted text and suggestions for rephrasing the text to avoid plagiarism.
- The platform is compatible with popular file formats like Word, PDF, and HTML, making it a versatile tool for checking the originality of different types of documents.
- It can be easily integrated with popular Learning Management Systems (LMS), making it easy for educators to check student assignments for plagiarism.
Pricing:

- Starts at $15.00 – 100 pages selected
3. Quetext

Quetext is a modern plagiarism checker that uses advanced algorithms and machine learning techniques to detect plagiarism and ensure the originality of written content. The tool is designed for students, educators, writers, and professionals who want to ensure the quality and authenticity of their work.
Features:

- Uses its proprietary DeepSearch technology to compare text against billions of online sources and databases, including academic journals, books, and web pages.
- Quetext has a simple and user-friendly interface that allows users to upload files, copy and paste text, and view detailed plagiarism reports.
- It can detect missing or incorrect citations and provide suggestions on how to improve them.
- Supports multiple file formats, including Microsoft Word, PDF, and plain text, making it easy to check content from a variety of sources.
- Provides comprehensive plagiarism reports that include a similarity score, a list of sources where matches were found, and a highlighted text showing the areas of similarity.
Pricing:

- Free
- Premium Plans – $8.25 per month
- Enterprise – $7.50 per month
4. Originality.ai

Originality.ai is a powerful plagiarism checker tool designed for businesses and individuals who want to ensure the originality and quality of their written content. It uses advanced machine learning algorithms to scan text and detect any instances of duplication or plagiarism.
Features:

- Uses sophisticated machine learning algorithms to analyze text and compare it against a database of millions of sources to detect any instances of plagiarism.
- The tool can scan text quickly and provide a comprehensive plagiarism report within minutes, giving users the ability to quickly identify and correct any issues.
- The tool can be easily integrated with popular content management systems such as WordPress, allowing users to check for plagiarism directly from their website.
- Provides detailed plagiarism reports that highlight any instances of duplication, showing the original source and percentage of similarity.
Pricing:

- $0.01 per credit, 1 credit scans 100 words
5. Copyleaks

Copyleaks is an online plagiarism detection software that utilizes advanced machine learning algorithms to scan text and compare it against a vast database of sources to identify instances of plagiarism. It is designed to help students, educators, businesses, and content creators ensure that their written work is original and free of any instances of plagiarism. Copyleaks supports various file formats, including Microsoft Word, PDF, and plain text, and can be easily integrated with popular content management systems such as WordPress. The tool generates comprehensive plagiarism reports that highlight any instances of duplication, showing the original source and percentage of similarity.
Features:

- Advanced machine learning algorithms are used by the plagiarism checker to analyze text and cross-reference it with millions of sources in its database, effectively detecting any plagiarism.
- The tool offers quick text scanning abilities and generates a comprehensive plagiarism report within minutes, allowing users to promptly address and resolve any issues.
- The tool is easily integrated with popular content management systems, such as WordPress, enabling users to check for plagiarism directly from their website.
- The plagiarism reports generated by this tool are detailed and comprehensive, highlighting any instances of duplication and showing the original source and similarity percentage.
Pricing:

- For students and Individuals – $9.16 per month
- For Education – book a demo
- For Work – $8.33 per month
Bottom-line
In today's digital age, plagiarism is a serious concern that can have severe consequences. Plagiarism checkers are essential tools for writers, bloggers, students, and professionals who want to ensure the originality of their work and avoid any issues. Advanced algorithms are employed by these tools to rapidly scan text and cross-reference it against a massive database of sources, thereby promptly detecting instances of plagiarism. By using a plagiarism checker, users can save time, avoid penalties, and protect their reputation.
Readers Disclosure: Our content is supported by our reader, that means some of the link from this article and within this website are affiliate links. If you click any of these links, then we may earn a commission with no extra cost to you.