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Best Online Plagiarism Checkers

Looking for the best online plagiarism checkers? Or are you not satisfied with the pricing and features of Copyscape? In this listicle we will take a look at the best copyscape alternatives that you can use either for free or at a minimal cost.

Need for an Online Plagiarism Checker

The internet is filled with an abundance of information and developing research papers or writing articles on diverse topics has become a child’s play. With the internet offering tons of data, you can access almost anything on any topic on the internet. Therefore, with the available resources found on the web, new articles or academic papers can be reproduced with ease.

If you are of the same opinion then you should also be aware that copying the entire content from the internet and using it as your own is considered stealing intellectual property. Therefore, a plagiarism check is taken as an important consideration when creating content.

The internet has allowed free access to information to students, professionals, and writers but reusing the same content is an unacceptable act.

One cannot reuse the same available data without proper citation as this may breach the code of conduct of different professionals and entities. Hence, more and more people are taking plagiarism checks as an important step before publishing their final content.

How Can Technology Help With Plagiarism Check?

Plagiarism is a serious criminal act that is not acceptable in both academic and professional spheres. Unfortunately, people unknowingly produce content that matches the text on the internet.

They compose their own articles, academic papers, or blogs from scratch but still end up with duplicate content. The reason why most writers unintentionally produce plagiarized content is because of the extensive data on the internet which leads to high chances of matching your thoughts with others. However, with the introduction of cutting-edge software applications for plagiarism checks, our lives have become easier.

Whether you have created your own content or paraphrased an article from the internet, an online plagiarism tool is your ultimate companion for all your writing needs. You can now eliminate or paraphrase content from your work that may raise questions.

Why Use an Online Plagiarism Checker?

There are myriad reasons for using an online plagiarism checker. In today’s world, bloggers and marketers are highly dependent on this incredible tool. Let’s take a look at some of the benefits that the plagiarism checker has to offer.

Instant Results

The online plagiarism checker works really fast and generates results almost instantly. These advanced programs search the entire web within a few seconds, compare your text with the content around the world, and highlight the duplicate paragraphs or sentences almost instantly.

Provides references

Plagiarism checkers are particularly useful for students who have to produce academic papers based on solid evidence. When your text is matched with the original content, you can correctly cite the source and avoid committing the offense of plagiarism.

Saves from possible allegations

These amazing tools greatly help writers to stay within regulatory and ethical limits. Plagiarism is a criminal act and you may be penalized for committing this offense. Hence, with a plagiarism tool, you can save yourself from possible allegations that may arise from publishing duplicate content.

Helps maintain ranking on Search engines

The search engine operates through web crawlers that crawl through websites to thoroughly examine the content.

Websites with unique and quality content tend to rank higher on search engines. However, if your website is screened and found using duplicate content then your ranking could be adversely affected. In the worst cases, your website may get delisted by search engines.

Therefore, always run a plagiarism check on your content using plagiarism tools before publishing it on the internet.

Best Plagiarism Checkers with Free Plagiarism Check

We are now well-aware of the importance of plagiarism checks when it comes to content creation.

The next question that arises is which plagiarism tool should be used by bloggers, students, and marketers?

Honestly, the market is flooded with tons of plagiarism tools but make sure you pick the right software. Unfortunately, there are some tools out there that fail to maintain standards of confidentiality.

Also, they may not generate the exact results of plagiarism that can lead to serious consequences. To help you make the right choice, we have listed the best plagiarism tools.

Plagiarism Detector

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This free tool allows you to conduct as many searches as you want. Hence, if you have a huge amount of data then the Plagiarism Detector is the tool to use. However, you can only check a maximum of 1000 words at a time. With its deep search technology, you can conveniently convert your plagiarized text into unique content.


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Plagly is an amazing software that allows plagiarism to check content instantly. It has advanced detection technology that matches your content with all possible data on the internet. The tools, with their easy-to-use interface, can even be used by people with no technical background.

Plagly is an ad-free website that is the top choice for bloggers and marketers.


Duplichecker  plagiarism checker

Duplichecker is the most renowned name in the SEO tools industry. Marketers call Duplichecker as a complete SEO package since the company has a huge range of useful tools to offer. It is by far the best plagiarism tool on the market. It not only detects plagiarism accurately but also checks for grammatical mistakes to improve and correct the user’s text.

To check your plagiarism with Duplichecker, just visit their site, where you’ll find a text box. You just need to paste your content in the box and hit “Check Plagiarism”. Your content will be thoroughly matched against the tool’s database and content available on the internet.


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Writer’s plagiarism checker is an essential tool for any writer to have on hand. Whether you’re a student writing a paper, a teacher checking work, or an editorial writer, this is a tool that will keep you on top of your game with avoiding plagiarism at all costs. 

Writer uses an AI assistant to review your text making it consistently clear and error-free. All you have to do is copy and paste your text into the plagiarism checker box and all the work is done in less than a few seconds. One feature that makes this plagiarism checker stand out even more is that it not only addresses plagiarism, but it’s also a grammar checker. It actually scans your text for every possible writing mistake, including punctuation errors, grammatical errors, issues in conjugations, spell-check, and more.

Here are some of the other things Writer checks for:

  • Clarity
  • Readability
  • Approachability
  • Conciseness
  • Writing style
  • Terminology
  • Tone
  • Brand voice
  • Uniqueness
  • Bias

It’s a great overall tool to use when writing in any setting since it covers every possible base. Professional writers love it because it analyzes your content within the context of what you’re writing about and the AI understands that some rules are meant to be broken when it comes to your grammar style and writing within a work setting. One of the other major perks with the plagiarism checker is that it’s a free tool. No sign-up needed to access it and no limits to how often you can use it.


Grammarly is usually known as a tool for proofreading written material and fixing grammatical and punctuation errors. However, it also has a highly efficient free plagiarism detector. Basic features are free. More features are included as part of Grammarly’s premium package, which gives you full access to its functions. Unlike Copyscape, Grammarly premium features monthly, quarterly, and annual billing cycles. You will have access to all the features of the plan right after you purchase it.

The biggest advantage of Grammarly’s plagiarism checker is that it has no limit for the number of words and checks that you can carry out. Once you buy a premium account, you will be able to perform as many plagiarism checks as you want. You simply need to go to the dashboard and turn on this feature. For college students who borrow heavily from online sources for their work, this is an excellent resource. It is also a very useful tool for freelance writers who need to check their content from plagiarism and grammar on the go.

The plagiarism checker can check your content against an astounding 8 billion web pages in just a few seconds. It serves both as your proofreader and grammar checker, helps you avoid wordiness, checks active and passive voice, and has a built-in citation generator as well.

Upon checking, Grammarly provides you with a detailed report of your textual material with the plagiarism content highlighted. It also informs you about the resource page where the content duplication has been detected. Thus, you will be able to work on improving your document accordingly.

Grammarly has specifically been designed as an online plagiarism checker for students. Other writers, including bloggers, can also use it to generate better and fresh content. Unlike Copyscape, which is merely a plagiarism checker tool, Grammarly is a wholesome writing assistant program. Checking for plagiarism is simply one of the large numbers of features that it offers. With the help of this amazing tool, you will be able to polish your writing and make your content free from errors.


Quetext is another useful tool which has been growing very popular among teachers, students, researchers, and professors. It is an efficient plagiarism checker which serves as a citation helper as well. Its free version can check your content against billions of similar documents and pages on the internet.

However, it also has a limit of 500 words per search, with only three reports and three search limits as well. If you buy its PRO version, you will get access to numerous other useful features like the DeepSearch™ and ColorGrade™, which are unique technologies utilized by a number of well-known plagiarism checkers.

The PRO version can check your content online against over 35 billion pages, one million academic journals, and 20 million books. It also features unlimited searches of 25,000 words each. It also supports several file uploads and gives you PDF reports of the percentage of copied content. Its DeepSearch™ technology enables it to check your material for even the smallest hints of contextual plagiarism, instead of simple phrases or words alone. If you want to avoid testing your content against your own older work, Quetext offers exclusion facilities as well. 

Quetext also respects the intellectual properties and privacy of people who use its service. Documents uploaded to the Quetext database are not traded or sold to third parties. It does not illegally claim any rights to your material for having used its service either. By virtue of these qualities, it is used by over a billion professionals, bloggers and writers today. It is undoubtedly one of the best plagiarism checkers you will find online.


CopyLeaks is an AI-powered plagiarism checker and a good alternative to Copyscape. It can perform an efficient web search to check for duplicate content and provide fast and accurate results in a short time. By virtue of its duplicate file finder tool, you will be able to compare your sensitive internal documents in a private and safe environment. Apart from this, CopyLeaks features a useful multi-language capability as well.

Unlike most other plagiarism checkers like Copyscape, which can only check material written in English, CopyLeaks can actually identify content stolen from another language as well. Thus, it is a valuable resource for teachers to check their students’ research papers for plagiarism.

The tool features a simple and user-friendly dashboard, which is easy to navigate even for beginners. It also offers extensions for Microsoft Office and Google docs, so you will be able to obtain plagiarism reports of your material directly from those apps. Like all other plagiarism checkers, CopyLeaks can be accessed using your phone’s regular web browser. However, it is available as a highly functional app for both Android and iOS smartphones. You can use this app to click a photo of your text, upload files in various formats (such as DOC, PDF, and RTF), insert a URL, or copy-paste your material to check for plagiarism. You can also share the plagiarism report with your writer using this tool.

CopyLeaks features a free plan like Copyscape, which has a limit of ten pages and can check up to 2,500 words for free. It also allows you to compare different documents against each other, and scan in over a hundred languages. However, the free version does not offer support for Google Docs or Microsoft Word.

CopyLeaks’ minimum premium plan will cost you $10.99 per month, and allows you to scan up to 25,000 words. You can use this plan to gain access to its state-of-the-art AI plagiarism detector, full API access, share links and plagiarism reports, and obtain integrations for Microsoft Word and Google docs. Higher premium plans provide even more helpful features like scanning up to 100 files at a time, integration with the learning management system, and indexing internal documents to be compared against each other.

CopyLeaks has gained widespread appreciation among enterprises and teachers for its efficient performance. As a tool for ensuring content originality, it is one of the best alternatives to Copyscape.


PlagTracker is a relatively simple plagiarism tool that helps you keep your content original and free from unintentional plagiarism. Website owners, teachers, and students who want to make sure that their content is unique can avail the free version of PlagTracker. It will give you more or less unlimited access to its features. You will be able to add nearly 5000 words into the text field featured on its website. It will then analyse your content and give you a report with source links related to the plagiarized content it has detected.

PlagTracker also possesses an impressive database. Your written material will be checked against over 14 billion pages on the web.

Similar to other tools like CopyLeaks, PlagTracker supports several languages like English, Italian, Spanish, German, French, and Romanian. However, the free version of PlagTracker can occasionally produce incorrect results as well. Also, it often does not give you the results immediately. Instead, your material is put in the waiting queue. Thus, if you are dealing with sensitive content where fast and extremely accurate reports are required, the free version of PlagTracker is not recommended.

The premium version of PlagTracker starts at $7.45 per month, and offers a number of new features. For example, it allows you to upload .txt, .doc, and .docx files for scanning against plagiarism. It also gives you the results immediately and allows you to download an offline version of the report, in PDF format. You also have the option of integrating API with your application given by PlagTracker. The premium version offers a free grammar checker tool as well.

However, even with the premium version, PlagTracker is been known to occasionally produce false results of plagiarism. If you need to be absolutely sure about the originality of your research or website content, then try to have PlagTracker as your second choice after scanning your material with a tool like ProWritingAid or Grammarly.


Unicheck is an excellent resource for tackling plagiarism and a highly recommended Copyscape alternative. It has a database of over 40 billion web pages and educational sites. It also supports a wide range of formats and bulk uploading of files. Thus, you can count on Unicheck to detect plagiarized content with pinpoint precision. Unicheck has a very user-friendly and easy-to-use interface. After you register and create an account, you will be given access to a simple dashboard that can be used conveniently by beginners and professionals alike. If you are a newcomer, you will be shown how to upload files and purchase more pages for scanning.

Unlike Copyscape, where you have to buy words with each plan, you will be given the number of pages with every plan in Unicheck. You can scan your content with speed and efficiency using various browser extensions and add-ons. For example, you can see the plagiarism report directly within Google docs by using the Google docs add-on. Similarly, you can use the Google Chrome extension to scan your written material with much better speed.

Once the document has been scanned, Unicheck will give you a simple but informative report. You will see the total percentage of detected plagiarism and source links in there. After that, you can also look for similarities on the internet or in your library. For different people, both these options can be useful. For example, researchers and bloggers can use the internet source to check for duplicate content. On the other hand, teachers can use the library option to detect plagiarism in students’ content. The free version of Unicheck allows you to check only 200 words at a time.

You can purchase the premium packages starting at $5. The most basic package gives you the Google Docs add-on, a bulk checking facility, and 20 pages. Unicheck considers 275 words to comprise one page, so you will be able to check a total of 5500 words using this package.

The other pages will remain available to scan until you make another payment. However, if you choose not to do so, you can still access your pages until 6 months. Thus, you do not have to pay them every month. You can keep using Unicheck’s services freely for six months as long as you have pages. Apart from this, Unicheck features different plans for Business and K-12 & Higher ED as well. You can avail superior support services and other advantages by subscribing to these plans.

Today, Unicheck is trusted by over 1000 reputed institutes. It is one of the most efficient plagiarism checker tools available, and an excellent alternative to Copyscape. Although it is relatively more expensive than other tools mentioned here, it is well worth the price for the highly useful features it offers.

Some Totally Paid Plagiarism Checkers

All the plagiarism checkers above offer a paid version with more features. You can access those features by buying the respective packages. If you are really interested in getting a premium tool, I wholeheartedly recommend Grammarly Premium. It is much more than just another tool. See my straightforward review of Grammarly here.

Here are two other premium only tools that you can give a try:


ProWritingAid is widely considered to be one of the best alternatives to Copyscape. It serves as a writing coach, style editor, and grammar expert rolled into one package, and offers a truly wholesome writing experience.  Apart from this, it offers a powerful inbuilt plagiarism checker feature. This allows you to check your content against more than a billion other published online documents, including web pages and academic papers.

ProWritingAid’s plagiarism checker is a paid feature that you can avail by purchasing its Premium Plus plan. Unlike Copyscape, you do not need to buy the credit and use it for the number of words. In place of word count, ProWritingAid allows you to decide the number of checks for detecting plagiarism. Thus, you will be able to freely analyze full articles and chapters. Using its detailed database, ProWritingAid is able to identify textual similarities efficiently. You will then be given 25 different reports such as long sentences, passive voice, transition, vague wording, repetitiveness, and so on.

Like Grammarly, ProWritingAid can work with Google docs and is available in the form of browser integrations, a Microsoft Word add-on, and desktop apps for both Windows and Mac OS. Thus, you don’t need to copy and paste your content into an online editor and lose your text’s formatting. For people who don’t want to install any new software on their device, ProWritingAid’s web editor provides all its necessary features. 

Whether you want to create an essay, guide, or any other document, ProWritingAid is an excellent choice. As of now, it has over 700,000 users including professional editors, students, authors, and copywriters. It is widely used by creative writers, including novel writers and script writers. For such users, ProWritingAid also offers a unique Thesaurus feature. Once you enable it, you can get a list of alternative words by hovering your cursor over underlined words in the text. This helps you improve your vocabulary and enrich your content by using different words in every article.

One of the main complaints of users regarding Copyscape is its high cost. The Premium version of ProWritingAid, on the other hand, can be purchased for merely $52.50 per year. For this reasonable price, you will have access to all its premium features like software integrations and its desktop apps. The Premium Plus plans of ProWritingAid, which start at $60 per year, will give you access to its plagiarism checker along with all the features of the Premium version and a 14 days money-back guarantee. You can do a total of 50 plagiarism checks per year with this version.


As of now, WhiteSmoke is probably Grammarly’s fiercest rival. It is widely known as an all-in-one English correction software. Similar to Grammarly, it has a grammar and language checking tool with a built-in plagiarism checker. The latter is remarkably powerful and efficient, making it one of the most highly recommended Copyscape alternatives out there. It scans both online and offline content to detect plagiarized content, with great speed and accuracy. Thus, it is a highly useful tool for people involved in research and academic writing. 

Along with the plagiarism checker, WhiteSmoke features an excellent grammar checker that can efficiently detect and fix grammatical and spelling errors in your text. It also helps you in improving your writing style and translating entire texts from more than fifty languages, based on NLP (Natural Language Processing). WhiteSmoke also features several documents and email templates, along with useful video tutorials for convenient on-boarding and usage. It can be used on all browsers and as a standalone mobile and desktop app as well.

WhiteSmoke features a unique color-coding scheme which uses different colors to highlight different issues in your text. Thus, you will be able to easily understand the weak areas of your writing and work on improving them. That makes it a very useful tool for professors and students. Unfortunately, WhiteSmoke cannot identify tenses, and sometimes tends to stop working in between. However, these are relatively minor issues. Most users have praised its accuracy, compatibility with various browsers and devices, and efficiency.


Plagiarism through these amazing tools will save you from a lot of trouble and possible allegations. If you are a blogger or a student, then it’s high time you stick to these tools for your plagiarism, editing, and proofreading needs.

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