19+ Best Online Plagiarism Checker Tools of 2024

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Written By Sofia Smith

Reviewed by: Isabelle Merlin

A collection of the best online plagiarism checker tools that can reduce the chance of content duplication possibilities to a great extent.

Are you looking for the best online plagiarism checker tools in 2024? If yes, then let's first understand the basics of plagiarism in simple words.

In publishing, plagiarism is something that many writers and bloggers are doing. It would be best to avoid this particular thing because it is unethical.

What is Plagiarism?

Plagiarism in the online world refers to using someone else's words, ideas, or creative work without properly crediting the original author.

This can encompass a wide range of activities, from copying and pasting text verbatim to paraphrasing without attribution to using images or other copyrighted material without permission.

The pervasiveness of the internet has significantly amplified the opportunities for plagiarism.

The vast amount of readily available information, coupled with the ease of copying and sharing content, has made it tempting for some individuals to pass off others' work as their own.

According to plagiarism.org, the following are the forms of Plagiarism:

  • Pretending someone else’s work is your own.
  • Copying the full content.
  • If someone copies ideas and words without giving credit to the original author, it's called plagiarism.
  • Copy the same sentence with the usage of synonymous without giving credit.

Copying others’ content is plagiarism.

The famous dictionary Merriam-Webster defines plagiarism as:
“The act of using another person’s words or ideas without giving credit to that person.”

If you are getting your content written by some writers, you must check the content for plagiarism before publishing it on your website because you never know what the writer has done.

He might have given you a stolen copy of the content.  Thus, checking the content is very important because if you publish that content on your blog without checking, your credibility will hurt, and Google's Panda update can also hit your blog.

Forms of Plagiarism in 2024:

Plagiarism in the online world manifests itself in various forms, each with its own distinct characteristics:

Direct Plagiarism:
This involves copying and pasting text directly from another source without crediting the original author.

It's the most blatant form of plagiarism and is easily detectable with plagiarism detection tools.

Paraphrasing without Proper Attribution:
While paraphrasing involves rephrasing someone else's work, it's still considered plagiarism if it's done without acknowledging the original source.

Proper attribution involves providing citations or references to the original material.

Copyright Infringement:
This occurs when someone uses copyrighted material, such as images, music, or videos, without obtaining permission from the copyright holder.

Copyright infringement is a legal issue and can have serious consequences.

Mosaic Plagiarism:
This involves piecing together fragments of information from various sources without properly crediting each source.

While the passages may not be directly copied, the work is still considered plagiarized.

Contract Cheating:
This involves paying someone else to complete academic work, such as essays, research papers, or projects, and then submitting it as their own.

Contract cheating is a serious academic offense and can result in severe penalties.

Examples of Plagiarism

To better understand the concept of plagiarism in the World Wide Web's online world, let's consider some specific examples:

  1. Copying and pasting text from a website into a blog post without providing a link or citation.
  2. Paraphrasing an article's main points but failing to mention the author or title of the source.
  3. Using an image from a social media platform without seeking permission from the original photographer.
  4. Submitting an essay written by a professional essay-writing service as one's own work.
  5. Compiling a research paper by combining information from multiple sources without providing proper citations.

How to Prevent Plagiarism in 2024?

The key to preventing plagiarism lies in understanding and respecting intellectual property rights. Here are some strategies to avoid plagiarism in the online world:

Use plagiarism detection tools to check your work for potential plagiarism.

Always cite sources properly when using information from other sources.

Use quotation marks for direct quotes and paraphrase in your own words.

Educate yourself about plagiarism and its consequences.

Obtain permission before using copyrighted material.

How to Choose the Best Plagiarism Checker in 2024?

Remember the following factors before choosing the correct plagiarism checker to verify the originality of your content.

  • Cost 
  • Ease of Use
  • Online Availability
  • Scope and Structure
  • Free or Paid Version

You must not use plagiarized content on your blog or anyone else’s. If you need to copy a few words or phrases, don’t forget to give credit to the original author or website.

In this article, I will list some free and paid tools for checking content for plagiarism. These tools are used to prevent plagiarism and are called the best online plagiarism checker tools.

Essential Questions About Plagiarism Checkers:

  • Does that plagiarism checker store and sell your content?
  • How effective is that plagiarism checker?
  • Is the end report accurate?

You can create a plagiarism report using free tools by finding the answers to these questions.

With these crucial questions, we analyzed many plagiarism tools to give you the best tools to check your content for plagiarism.

You may also like to read:

Best Paid and Free Online Plagiarism Checker Tools in 2024

According to several studies, plagiarism is one of the giant evils in the world of writers. It is a rampant issue that results in the loss of money, reputation, and career.

The reason behind this negative influence is that it is a poor piece of work without proper citations.

So without any further delay, let’s have a look at the list of best online plagiarism checker tools of 2024:

1: Grammarly

Grammarly Plagiarism Checker Tool
Grammarly Plagiarism Checker Tool

Grammarly is popularly known for its excellent grammar checker feature, but it also checks your content for plagiarism, an added advantage of this superb tool.

Grammarly suggests more than what you want when checking for plagiarism. Correct grammatical mistakes and check your writing and content through Grammarly. 

Once you open Grammarly, you must upload your content to the “Add New” section.

Upload your content, and get the plagiarised content results in a percentage form, with reference links, correctness, clarity, and engagement through the content

It’s effortless to use and can be operated by anyone efficiently.

2: Copyscape

Copyscape Plagiarism Checker Tool
Copyscape Plagiarism Checker Tool

Copyscape is a renowned plagiarism detector tool available on the internet.

When I was introduced to blogging and writing, this was the first tool I used to check plagiarism.

Copyscape offers free and premium subscriptions. If you want to use its free version, you can only check the plagiarism of a live web page’s content here.

To check the content before publishing, you must buy its credits.

3: Plagscan

Plagscan is an online plagiarism checker tool that allows you to upload your content in any standard file format or directly paste the text to check whether the content is unique.

Though Plagscan is a paid online tool, it offers 20 free Plag points to private users that they can use to check around 2000 words.

It is good enough to know how good this tool is for deciding whether to buy the premium plan.

The number of documents you want to check is irrelevant, but the total number of pages or words matters.

If you want to check multiple documents or the same document multiple times, please estimate the number of words to choose the right package.

4: Plagiarisma

Plagiarisma is a free online tool to check content for plagiarism. You can use it without registering, but it has a few limitations. However, you can use all its features as a registered user.

You can check the text by pasting it to its editor or pasting the URL to check the live pages for plagiarism.

You can install its desktop version as well, and you can use it on your Android phone.

Plagiarisma browser extension is available for modern browsers, such as Google Chrome and Firefox, and this tool offers many benefits for free.

5: Quetext

Quetext Plagiarism Checker Tool
Quetext Plagiarism Checker Tool

The plagiarism checker of Quetext is also a freemium tool on this list. However, compared to the other freemium tools, the results of its plagiarism scan are sometimes deceptive.

That’s because sometimes, this tool attributes several sentences to various sources.

It uses Lightspeed recognition and deep search technology to quickly scan and compare the uploaded content with its database.

So, its plagiarism detection engine is one of the fastest ones. Its free version is enough to check the quality of its plagiarism detection engine.

The database of Quetext contains more than 1+ million journals, extensive searchable books, and website libraries.

So, this plagiarism checker takes assistance from deep search to quickly compare the uploaded content against the contents of its database.

6: Plagium

Packed with many features, Plagium is one of the most unique plagiarism checker tools I have ever worked with.

You can upload a file, paste the text, or paste the link to check for plagiarism.

Most of its extended features require a premium account, but for a regular check, you can navigate to its home page, paste your text, and hit the Quick Search button.

7: Plagiarism

Plagiarism is a premium plagiarism tool. You can check your content only once for free from one IP.

Plagiarism Checker Tool
Plagiarism Checker Tool

This tool is powerful, and the cost is not much. It has a silver plan for $14.95 per month and a gold plan for $19.95 per month.

It is a good plagiarism tool to try out. You can even upload Word documents to save time.

8: Duplichecker

Duplichecker is a free tool to check plagiarism.

However, you have to sign up to do more checks because it will ask you to register just after one check.

It works well many times, but sometimes it shows irrelevant results.

I copied one article from a live blog post and put it there, and it said no plagiarism was detected.

It happened once, and it worked well the rest of the time.

9: Bartleby

Why pay when you get the same service free of cost? Bartleby offers an entirely free plagiarism check.

Copy and paste the text into the text area and process the check. The results will be in front of you within a few minutes.

Bartleby Plagiarism Checker Tools
Bartleby Plagiarism Checker Tools

Step-by-Step Guide to Using Writing Tool:

1. Click on the ‘Try Writing Tool‘ button at the bottom of the page.

2. Once directed to the Writing Tool’s page, click the ‘Try Today for Free‘ button.

3. Copy and paste the text that you want to be analyzed.

4. Select the ‘Grammar Issues‘ checkbox to analyze grammar. Select the ‘Plagiarism Issues‘ checkbox to determine plagiarism.

5. Hit the ‘Analyze My Draft Now‘ button.

6. Check results for insightful feedback to improve your writing.

10: Scribbr

The following tool to check for plagiarism in textual content is the ‘Scribbr Plagiarism Checker.

Scribbr's plagiarism checker is a Turnitin-powered plagiarism detector. Therefore, assistance from Turnitin plagiarism detection technology is needed to check for plagiarism in uploaded content.

However, unlike Turnitin, which has a knack for detecting all types of plagiarism, Scribbr's plagiarism checker specializes in identifying heavily edited text.

This tool is ideal to check the traces of paraphrase-plagiarism in your content.

This plagiarism detector’s database covers over 99+ billion websites and 8+ million publications.

So, courtesy of its extensive and Turnitin-powered database, you will get accurate results.

Besides an extensive database, the plagiarism checker of Scribbr can check content plagiarism in 20+ languages.

The language support in this tool is more extensive than the first and second tools.

11: Small SEO Tools Plagiarism Checker

If you are into SEO and blogging, there is a high chance that you know about Small SEO Tools because they are well-known for offering useful free tools.

Its plagiarism checker tool is straightforward: open it, paste your text into the text area, fill in the captcha, and hit the button to check for plagiarism.

The result will be in front of you in no time.

12: Check for Plagiarism

Check for plagiarism says that it checks through billions of publications and checks the live and cached versions of web pages, too.

This online plagiarism tool is an outcome of the combined efforts of teachers, students, and professionals.

Checkforplagiarism.net helps identify even the most subtle attempts at plagiarism using patented plagiarism-checking technology.

Your documents will be checked against billions of books, publications, academic journals, and Internet resources to identify intentional or unintentional plagiarism.

Whether you are an individual teacher or part of an institution, you can benefit from their plagiarism checker services.

Checkforplagiarism.net provides tailored and discounted accounts for both teachers and institutions.

It is a paid tool with extensive customer support available 24×7 via email, phone, and live chat. It can be a great tool to use if you have a budget.

13: PaperRater

PaperRater is not just a plagiarism tool but is also used for grammatical checks and writing suggestions. A few features are free, but Plagiarism check is a premium feature.

It requires no downloads, and the proofreader and plagiarism checker use AI to scan your essays and papers for errors and assign them an automated score.

This will help you correct grammatical and spelling mistakes, address unintentional plagiarism, and earn a higher grade for your work.

Copy and paste your writing into the online editor or upload your file and click ‘Get Report’!

14: Unicheck

Unicheck was launched in 2014 and is a cloud-based plagiarism detection tool that finds similarities, citations, and references in text content.

Most importantly, this is primarily used in K-12 and higher education organizations and is utilized by more than 400+ institutions worldwide.

Unicheck Plagiarism Detection for Education Main Features:

  • Effortless integration with all major LMSs.
  • Searching across 91B current and archived web pages and your library.
  • Similarity links are free from viruses, phishing, and other security threats.

UniCheck’s simple user interface integrates seamlessly, which most users prefer.

Combining technological excellence and intuitive design, Unicheck helps its users achieve authenticity instead of simply pointing out similarities.

15: Plagiarism Check

Plagiarism Check is a fast, free online plagiarism checker tool that allows you to check an unlimited number of contents.

The best thing about this tool is that it continually improves the plagiarism checker engine. It also creates plagiarism reports quickly, which you can download.

The plagiarism detector helps check text originality, verify authorship, trace AI-generated content, and improve writing.

You can quickly scan for plagiarism to indicate similarities in any text and get an unbiased similarity report.

According to a European Network for Academic Integrity study, PlagiarismCheck.org is in the top three of all content similarity detection systems in terms of efficiency.

16: PlagTracker

PlagTracker claims to be one of the most accurate plagiarism checker services. It is helpful for students, teachers, publishers, and site owners.

It works with six different languages, i.e., English, German, French, Spanish, Romanian, and Italian.

Students can benefit from Plagtracker plagiarism detection software by having their essays or research papers checked for plagiarism.

Many college and university students face extreme penalties for plagiarism, such as failing an assignment, losing privileges, academic probation, or even expulsion.

Punishments can sometimes include lawsuits, criminal charges, and even imprisonment. Even if you commit unintentional plagiarism, it can still be viewed as plagiarism in the eyes of the law.

So why risk being penalized for plagiarism when, with plagtracker.com, you can be 100% sure that your writing is unique?

17: Turnitin Similarity

Turnitin Similarity is another plagiarism checker tool that checks your content copy for plagiarism.

Its high-quality, comprehensive similarity detection helps maintain your institution’s reputation.

Turnitin Similarity helps students and educators identify plagiarism while teaching students the importance of original work.

You can easily compare student work against their industry-leading database of 47+ Billion current and archived Internet pages, 1.9+ Billion student papers, and over 190+ million articles from the top 97% of publications.

You can view an assignment’s similarity score, get color-coded results, and compare sources side-by-side while excluding unnecessary matches.

18: Copyleaks

Copyleaks performed relatively poorly with different source types. It was good at detecting copy-and-paste plagiarism but didn’t perform well with both rewrite tests.

In our test, Copyleaks could not detect picture-based sources, and detecting scholarly content was limited.

Copyleaks online report is interactive. It is possible to exclude sources and compare the original document with the source.

Copyleaks are registered in the US and clearly state that they “will never steal your work.” Still, users need to contact them to remove uploaded documents.

19: EduBirdie

EduBirdie is a well-known platform for all your writing requirements for academic-related content.

If you are looking for a writer for your academic papers or a proofreader, look no further because EduBridie offers high-quality writing services.

EduBirdie offers a powerful plagiarism checker tool to help you create error-free writing.

When you outsource your writing assuagement, you often don’t receive 100 percent unique and error-free content, so check the content before accepting it.

The EduBirdie plagiarism checker tool is simple to use. You have to paste the title of your paper and the content. It will take a few seconds, and the results will be shown to you.

The system will show you the percentage of unique content and highlight the duplicates so that you can quickly have a look and improve the content.

Overall, the tools are practical, easy to use, and free.

20: Quillbot Plagiarism Checker

QuillBot is a tool that uses artificial intelligence to help with the writing process.

It’s well known for its ability to paraphrase sentences, but it also has features to summarize information, correct grammar and punctuation errors, cite sources, and conduct plagiarism checks. 

Quillbot plagiarism checker feature is helpful for bloggers, freelance writers, and students. All you need to do to check for plagiarism is copy-paste your text into the tool and allow the tool a few seconds to scan. 

The Plagiarism Checker is bundled into the Premium plan and allows you to check 20 monthly pages. That’s approximately 10,000 words for $19.95.

Still, you can always buy additional pages if you exhaust the character limit. The plagiarism checker archives past scans, accessible with a button.

FAQs About Best Online Plagiarism Checker Tools 2024:

  1. How is plagiarism detected?

    Even though some are free, you can detect plagiarism with online plagiarism checker software. When using it, they also reveal the plagiarized source and highlight it with a color code.

  2. Why do we need plagiarism checker tools?

    We need plagiarism checker tools to detect how unique the content is. The more unique, user-friendly, and richly written the content, the more chances it will be to be ranked on the web quickly.

  3. What is the best tool to check plagiarism?

    Based on our usage and by going through all the plagiarism checker tools, we can say Scribbr and Grammarly are some of the most popular and used tools by customers. They have proven their worth by being the fairest and feature-filled tools of all time. 

  4. How do I check for plagiarism for free?

    All of the tools mentioned above also offer freemium services and versions. So, you can check a limited number of words or content through them until a point in time. 

  5. Is plagiarism checker 100% accurate?

    Their quality depends only on the algorithm used to identify plagiarism and the database size with which your content is compared. According to our in-depth research, Grammarly and Qutext are the most accurate free plagiarism checkers. Many paid plagiarism checkers detect all plagiarism correctly, so it’s up to you which one you prefer.

Conclusion on Best Online Plagiarism Checker Tools of 2024:

I have mentioned online free and paid plagiarism checker tools that would benefit you.

Plagiarism is a sin we must avoid as bloggers or writers. To stay safe from plagiarism, always check each piece of content for plagiarism, whether you write it yourself or get it from someone else.

I am using Grammarly’s premium version. Thus, I got a plagiarism checker for that too. I would highly recommend Grammarly because it is excellent.

Did I miss any of the best plagiarism checkers? If you know any other best plagiarism detector that deserves a place on this list, comment below.

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