22 Best Plagiarism Checkers (Free & Paid)

Plagiarism or calling someone else’s work as your own can cause serious damage to your reputation. It can even drag you into legal issues. Plagiarism doesn’t have to be intentional every time, but even if it is unintentional, you can’t afford the loss.

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Plagiarism is not always about copying someone else’s content word by word. There are different kinds of plagiarism of varying degree. Irrespective of the degree, plagiarism is completely unacceptable to the industry. Let us know the types of plagiarism you must avoid. 

Types of Plagiarism:

• Direct Plagiarism: It is the act of copying other writer’s content word by word. Copying a paragraph from an article or blog, without citing the source is an example of direct plagiarism.

• Paraphrase Plagiarism: Authors very commonly practice this type of plagiarism. This form of plagiarism involves copying of content with a few minor changes. Mostly the content is rephrased and called as unique content. Taking a part of an article, blog, or manuscript and framed as yours without providing a citation is an offence.

• Mosaic Plagiarism: In this form, the author uses the data or information from different sources, but doesn’t cite the sources. The portion of content taken could be paragraphs, phrases, or only figures. A few little changes are made to the texts, but the idea remains the same.

• Self-Plagiarism: A content is called duplicate content or self-plagiarism if an author copies an idea or a part of his or her own work done previously.

Why Do You Need A Plagiarism Checker?

Now you are aware of the types of plagiarism that you need to avoid. However, it is practically impossible to ensure 100% originality of the content even if it is created without using any reference. 

As an author, it is sensible to use a plagiarism checker tool for many reasons. Here is why:

• Plagiarism tools save you time. Manually searching for plagiarism with the different search engines is time-consuming.
• Plagiarism detectors give more accurate results as they have a more extensive database.
• They highlight the exact part of the content that is found copied, instead of pointing to a section.
• They show the amount of plagiarism in the content in percentage, which can be minimized as per requirement. 
• Most of the renowned tools issue their own reports to provide proof of the originality of your content. 
• They help you create more original content and assess your capacity to develop unique content.

As an author, I highly prefer plagiarism checkers for my posts. In this article, I have curated some of the best tools I could find. Here is the list:

The Best Plagiarism Checkers:

Grammarly Plagiarism Checker

I prefer Grammarly and found that none of the others come even close to it. There are many solid reasons for that. First, it is extremely easy to use. Just copy your content, paste it in the Grammarly, and there you are! The result is shown within minutes.

The tool offers highly accurate results as it refers to billions of web pages on the web. It is originally designed for students but works perfectly for professional writers as well.

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Grammarly Plagiarism Checker, which also includes grammar checking features, has pricing starting from $11.66/month. 

Features:

• You get a browser extension for Chrome, Safari, Firefox and Microsoft Edge.
• You can integrate it with Microsoft Word and Outlook.
• There is a word-limit of over 150K.
• It checks each phrase against over 16 billion web pages.
• It responds within minutes.
• It sorts through many different languages to check plagiarism.
• Keyboard support for mobile apps.

Unicheck

Unicheck is a dedicated tool for plagiarism checking only. It is trusted by over 1K academic institutions globally. While it is highly useful for teachers, lawyers and students, other professionals like bloggers, and marketers can equally get benefited. 

Unicheck is an AI-based tool and is designed intuitively to detect copied content. Besides, it also detects digital dupery and flags suspicious text formatting. Altogether it works to make your content authentic. 

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Moreover, it has features to analyze the author’s performance. It provides statistics and analytics, along with stylistic and linguistic components.

Unicheck is a paid tool, but a free trial is available. The paid plans start from $10.    

Features:

• It supports 99% of file formats and bulk uploads.
• It provides detailed reports to revise potential plagiarism.
• It provides Google add-on for on-the-go similarity checks
• It offers easy integration with all major LMSs.
• Experience real-time search across the internet and your library.
• The similarity links provided are free from viruses, phishing, and other security threats.

ProWritingAid

ProWritingAid is itself a complete package like Grammarly that offers both grammar and plagiarism checking. With extreme accuracy and power, this is an appropriate tool for professional editors. 

Besides, it is easy to use and checks the content against more than a billion webpages and published works. It provides the option to run the plagiarism report through the online editing tool, or Microsoft Word Add-In. ProWritingAid plans start from $10. 

Features:

• It shows texts found similar to other published work in percentage form.
• It suggests a citation or quotation mark, wherever needed.
• It suggests paraphrasing correctly or maintaining the originality of the content.
• It never resells user’s text to any other vendor or source.

Whitesmoke

WhiteSmoke is another comprehensive tool to create a unique writeup. Plagiarism check is a part of its many features, such as grammar checker, a translator, video tutorials, document and e-mail templates, and more.

WhiteSmoke uncovers texts that match with other published content and ensures your write up is unique. It is accurate and reliable as it scans millions of websites to check for plagiarism. Also, it is designed to process fast.

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The pricing starts from $59.95 for the yearly plan, which costs $5.00 per month.  

Features:

• It can be easily integrated with Microsoft Word & Outlook.
• It can compare text to texts online.
• Its video icon is a full-text translator for more than 50 languages.
• Its online icon is compatible with Windows and all browsers.

DupliChecker

DupliChecker is probably the best free tool for checking plagiarism available today. It comes as an online service with useful SEO and plagiarism detection tools. 

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DupliChecker scans the text entered for duplicate content. It detects copied texts and also displays the source from where it is plagiarised from. The results displayed include plagiarism, uniqueness, and related meaning, all in percentage. 

As a free tool, it provides much more than a professional can expect. It offers tools for SEO, finding backlink, making backlink, paraphrasing, Image search, proxy list, sitemap generator, malware checker, link analyzer, and much more.

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Features:

• It offers a plethora of free tools for professionals
• It is easy to use.
• It supports all major devices.
• No requirement of downloading a standalone app.
• It is available free of cost.
• It offers a 1000 words limit per search.

PlagiarismCheck.org

PlagiarismCheck is integrated with an advanced algorithm for detecting duplicate content. It is designed for educators, students, writers, and journalists. 

PlagiarismCheck is based on advanced technology that thoroughly looks for duplicate content. It checks for exact matches, rearrangement of the order of words, sentences with substituted words, and sentences’ voice changed from active to passive and vice versa. 

There are two types of plan categories, one for organizations and the other for individuals. Plans for individuals start from $5.00, and for organizations you need to get the quote from their site. 

Features:

• It provides detailed reports with the sources of plagiarism.
• It offers seamless integration for platforms like Moodle, Canvas, Google Classroom, Docs ad-on, and API.
• It offers integration with any other LMS.
• It supports any language in higher plans and English in the basic plan.
• They maintain the confidentiality of the texts entered and checked.
• The reports can be downloaded.

Quetext

Quetext is another very effective free plagiarism detection tool that is capable of helping students, teachers, and professional writers. 

With the help of DeepSearch Technology, it finds duplicate content in the text entered. The technology can trace not just direct plagiarism but also contextual plagiarism. 

The website has a very simple a, yet impressive layout. Simply sign up, enter the text, and press the tab Check Plagiarism. You will get your result in seconds.

Under the free plan, you can check up to 2500 words. The paid plan costs $9.99 per month and gives you benefits like checking 100,000 words, DeepSearch, and more.

Features:

• Find exact matches and near-exact or ‘fuzzy’ matches distinguished with different colours.
• Analyze the copied texts side-by-side with the snippet text viewer.
• Get contextual analysis
• Make the writer up unique with Citation Assistant – MLA, APA, Chicago
• Download the originality report
• Get custom URL exclusion
• The tool is strictly committed to privacy.

Copyleaks

Copyleaks is an excellent automated plagiarism checker you can rely upon. It is a highly sophisticated tool that provides the accurate, quick, and automated result. 

Copyleaks involves sophisticated Artificial Intelligence (AI) based algorithms to uncover direct plagiarism, paraphrased content, and nearly the same texts. It performs extensive searches across the internet and different databases to find matching content.

There are two types of plans, one for academia & education and business & enterprise. The plan starts from $9.16/month.

Features:

• It supports 100+ languages.
• It is powered with advanced AI and Machine Learning technology.
• It provides similarity matches, copied sources, original text, statistics, and much more in an easy to understand report.
• It scans through billions of online sources, licensed private databases, and previously submitted content on Copyleaks.
• It is integrated with platforms like Google Docs, MS Word, Moodle, and Learning Management Systems (LMSs).

CheckForPlagiarism.net

CheckForPlagiarism is one of the most advanced software that deserves to be on this list. It checks through billions of books, articles, academic, and professional journals to find for similarities in the submitted document. At the same time, the tool also takes care of the security of the document. 

CheckForPlagiarism is a highly secure platform that ensures the safety of your content uploaded. It uses SSL encryption, redundant servers, sophisticated firewalls, off-site secure backups, and much more to keep your document safe.

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Moreover, its document checking engine matched the submitted documents through their patented algorithm for the safety of the document.

Features:

• It can detect even the most subtle attempts at plagiarism. 
• It supports dozens of languages.
• It supports various file formats, including MS Word, Word Perfect, PostScript, PDF, HTML, etc.
• The document submitted is strictly not provided to any institutional/academic or other third-party databases.

SmallSEOTool Plagiarism Checker 

SmallSEOTool is a free yet feature-packed plagiarism detection tool you can use as a professional writer. This easy to use tool allows you to check your content from both the cloud and the local storage.

The result displayed includes both unique and plagiarised content in percentage. Also, it provides a compare button with each plagiarised sentence to check the matching source.

This is the perfect tool for anyone who wants to check their document for duplicacy.

Features:

• It provides sentence wise results.
• The results can be downloaded, and the reports can be shared.
• It supports several document formats such as .doc, .docx, .txt, .tex, .rtf, .odt, and .pdf.
• It also allows the user to check plagiarism via a website URL.
• Documents in many languages can be uploaded for duplicate checking.
• It is capable of taking content from the cloud, like Google Drive and Dropbox. 
• The content can also be uploaded directly from the local storage.
• A WordPress plugin version for this tool is available for checking plagiarism.

Plagium

Plagium is probably the easiest to use plagiarism checking software. While it has a free version for checking plagiarism, it offers a paid version too with additional advantages. 

The best part is that to use quick check in the free version, you don’t need to sign up, unlike other tools. Simply paste the content and press the Quick Search button, and the result will be on the screen in seconds. However, you have to sign-up if you want to go for a deep search.

You can get its prepaid plans as well as monthly plans. The plans start from $0.04 / page.

Features:

• It allows users to analyze texts from independent files and web sites.
• It supports different languages such as French, Portuguese, and Spanish other than English. 
• The reports are easy to understand as they are included with images for better comparison and analysis.
• It scans through different levels of plagiarism search.
• The results obtained can be displayed in various formats.

PaperRater Plagiarism Checker

PaperRater is the next must-have tool to check duplicacy for free. It has global users and is trusted for its accuracy. It thoroughly checks the web and provides an instant result. 

Plagiarism checker is one of the many features of PaperRater like Grammar and spelling checker, and feedback & writing instructions. Both the functionality comes together in all plans.  

The basic plan of the checker comes free in which you get 10 document checks per month. The paid plan costs $71.55/Yr in which you get 25 checks in a month.

Features:

• It displays the result in percentage
• It displays the sources or duplicacy from the web. 
• The results are printable.
• It is used in 140+ countries.

Plagiarism Checker X

Plagiarism Checker X is a standardized plagiarism detection application for research papers, blogs, assignments, and websites. Its speed and accuracy to check plagiarism are commendable. 

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Besides, users can check two documents side by side for similarity and get the result in seconds. Reports are easy to understand and analyze.

The basic version of this application is free. The paid plan starts from $39.95.

Features:

• It supports file formats like Microsoft Word Documents (Docx, Doc), Rtf, Pdf, and plain text, and it is compatible with Windows 10, 8, 7, and Vista.
• It can check documents in English, Spanish, French, German, Italian, Dutch, and Portuguese.
• The Bulk Search feature allows the user to scan the entire batch of assignments in just one click.
• It allows users to extract the keywords along with their occurrence and density ratio.
• It provides detailed and comprehensive PDF/DOCX reporting with a hallmark of Plagiarism Checker X software.

Copyscape

Copyscape is a service for plagiarism detection for content and banners. There are different products offered by the brand, and Copyscape Premium is the primary product for plagiarism detection. 

The application allows you to check any document for duplicacy by performing billions of checks on the web.  

Premium API is also available so that you can seamlessly integrate Copyscape Premium into your content workflow. 

Besides, there is a free comparison tool where you can compare two URLs or texts side by side. 

The price for searching starts from 3c per search (up to 200 words) plus 1c per extra 100 words.

Features:

• It can perform side by side documents checking and highlighting the same and different texts.
• Using Batch Search, it can check up to 10,000 pages in a single operation.
• It allows users to filter out results from other sites that the user owns or already aware of.
• It helps you keep track of plagiarism cases in your documents and your responses.

Plagramme

Plagramme is a plagiarism checking service for text-based content only. It focuses on finding similar content on the web for the submitted document. It can detect almost all sorts of duplicacy, including direct, improper reference, and paraphrase.

Most importantly, Plagramme with full function is free for educators. Teachers, lecturers, professors from schools and universities from anywhere in the world can use the service for free.

Others can use the tool for free but with partial functionality. Simply, sign up to the account, and you are ready to use the application.

Features:

• It displays scores in the report under different categories, such as similarity, plagiarism risk, paraphrase, improper citation, and matches. 
• All types of plagiarised content are highlighted in different colours. 
• It also provides sources of the link.
• The plagiarism checker supports 129 languages.
• It is free for teachers, lecturers, professors from schools and universities worldwide services pro bono.

Scribbr

Scribbr is one of the most advanced plagiarism detection software, specially designed for students. Unlike other tools, it finds actual plagiarism and ignores commonly used words and phrases.

In the detailed report, matching and similar content in percentage is displayed. Also, the site provides a guide to use the tool. It includes every help needed while using it. 

The pricing starts from $19.95 with permission to check up to 7,500 words. It offers three different plans.

Features:

• It can detect all types of plagiarism.
• It scans over 70 billion web pages and 69 million scholarly publications.
• The checked paper is not added to their database for scanning other documents.
• Users can use any unpublished or private documents as their own source to check the similarities with those documents.
• It supports .doc, .docx and .pdf formats.
• It can detect plagiarism in 20 languages, including English, Spanish, and Arabic.s

Webconfs Tool

Webconfs Tool makes a perfect tool for those who want to check the originality of their website content. Website content or the inner pages might contain texts that might be matching or similar to any other website or your own website. Webconfs’s similarity checker simplifies the issue by comparing two links.

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The tool displays the percentage of plagiarism and helps you to minimize the similarity as much as possible. The similarity checker by Webconfs is one of the many tools it offers. It is available for free of cost. 

Features:

• It compares two URLs at a time.
• It provides a similarity report in percentage.
• It is free to use.

PrepostSeo

PrepostSeo is a fabulous tool that is dedicatedly designed for students. However, its features make it an apt choice for professional writers as well.

Like, any other plagiarism checker it scans billions of webpages available online for any kind of plagiarism. But, in addition to that, it also crawls offline databases to check for any possibility of plagiarism. Also, it compares the document with other student submissions; it then generates a similarity report accordingly. 

The free version of the tool is available with limited accessibilities. The paid plans or premium plans price starts from $50/Yr.

Features:

• It allows users to paste the content or upload the file in formats like .doc, .docx, .pdf, .txt, etc.
• It also offers a Google Chrome Extension.
• It never saves the content for any type of further use.
• The reports are available in HTML and PDF format that are downloadable.
• It displays reports with sources, highlighted text, and in percentage.
• It offers a “Make it Unique” button that allows users to convert a document with reported plagiarism into a unique content.
• It supports multiple languages.
• It can be used for checking the thesis, books, assignments, code, article, essay, and more.
• The mobile app is also available. 

Sameday Papers

Sameday Papers is a writing service provider and also free to use plagiarism checker. You do not have to register or sign in before checking an essay. Just paste the content or upload file, then stick to their terms and conditions, and the result will be displayed instantly. 

The text is checked thoroughly and provides an instant result. As an added benefit, live chats and FAQs are available for users. 

Features:

• It does not capture or save the content checked and helps the paper remain confidential.
• It provides an instant result. The maximum waiting is 20 seconds.
• It is available free of cost.
• It flags the unoriginal content and offers its details in the report. 
• It supports .pdf, .docx, and .txt formats.
• It offers live chat.

Compilatio Studium

Compilatio.net is a plagiarism prevention and detection tool for everyone. It is useful for students, teachers, and writing professionals.

It offers three types of plagiarism solutions for different users. The Discover Magistrate is for institutions and teachers, Discover Studium is for students, and Discover Copyright for publishers or writers. 

For each solution, results are shown in a different way to help the user get the best experience.

Compilatio.net is functional in four countries only, that is Britain, France, Germany, and Spain. There is no free plan available. The price of the plan starts from 95 €/month. 

Features:

• No need to instal any application on the computer.
• A detailed report is displayed with the list of sources detected.
• Documents checked are never shared or stored, and they remain safe. 
• It supports four languages, English, French, Spanish, and German. 

PlagScan

PlagScan is a plagiarism detection tool designed for businesses and academic institutions. It is a preferred tool by education institutions for the accuracy it offers. However, it is equally suitable for businesses. 

It provides all the sources of plagiarism, as well as it also offers the option to compare side-by-side. This helps in proper citation or rephrasing if needed. 

It offers a free trial for single users and organizations. The premium plan starts from $5.99.

Features:

• Different matches are coloured in different colours. 
• It provides the sources for review. 
• It allows users to get a printable or downloadable PDF. 
• Plagiarism reported in percentage form.
• Uploaded documents are never shared with unauthorized third parties.
• It supports all standard file formats.

Dustball

Dustball is an online plagiarism checker designed with the simplest layout that makes it the easiest to use the tool. The checker can uncover all basic types of plagiarism, direct match, or similar content. This is a good option for basic checks.

You can either paste the text or upload the document file from the local storage; the choice is yours. The result is displayed on the screen and can be downloaded. 

It is available in both the free and paid version. A free trial for 5 days is also available. The paid version is three times more accurate as a free version and costs $8 per month for up to 50 uses. For each additional use, it will cost 25 cents.

Features:

• It supports basic file formats like TXT, RFT, DOC and DOCX.
• There are unlimited checks for paid checks, but restricted searches if not subscribed.
• It offers two options for checking – “Copy and paste’ online scanner and a file uploader.
• The Dustball plagiarism reports can be downloaded.

Conclusion

Today, the industry is extremely conscious of the originality of the document submitted. In this scenario, you must prove your written work is original. 

Using a plagiarism checker helps you identify precisely the part of the document that is plagiarised even if it wasn’t intentional. It is capable of displaying copied, similar, or paraphrased content. You can use the suggestions from the tool to replace those parts. Several tools provide additional features other than just detecting plagiarized content. 

The above is the list of carefully chosen plagiarism checkers, including both paid and free. Choose any of them as per your budget and be sure that the document you submit is 100% original.