Best Plagiarism Checkers in 2024

Pros

• It’s completely free. There are no special packages to buy if you want to increase the word limit or get more options—everyone is equal here and receives exactly the same service.
• It doesn’t require registration. Again, you won’t have to create an account for more options. Just go to the site and start using the checker without wasting time on anything else.
• There is no limit, so you can post as many pages for checking as you’d prefer. This rare option makes this checker stand out.
• It’s highly flexible and functional. It will count the words in your document for you, and you can drop files directly into the check window. Unlike most checkers, it supports many formats, including PDF, .txt, .doc, .docx, .rtf, and others.
• The checking process happens quickly, taking between 10 and 20 seconds.
• It’s user-friendly. Selected color combinations work well, and all the things you need to see right away are emphasized properly.
• It covers students, writers, and copywriters.
• You can select your type of paper so the system can be even more accurate, searching primarily in the corresponding categories.
• If something is wrong with your paper, you can pay for college papers and let professionals edit and polish it.
• Checking accuracy is high, alternating between 85-90%. EduBirdie caught the fact that our text was plagiarized.

Cons

• Sometimes, the service can be overcrowded, meaning you won’t be able to use it. On the one hand, this shows that a huge number of people choose EduBirdie because we haven’t seen anything like this with any other checkers. On the other hand, you might have to wait before using its services. It’s worth mentioning that such a situation happened only once, though, even though we accessed it several times throughout the day.
• A system might miss some phrases if they sound too general.
• If you are confused about your paper type when filling out the search form, you might get flawed results.

Pros

• It offers a huge variety of services, from plagiarism checking to documents comparison, MS and Google add-ons, API for developers, and so on.
• It serves many client segments, including students, business developers, and other interested parties.
• You can check 10 pages for free on a monthly basis.
• The layout and overall design of CopyLeaks site are professional, increasing its trustworthiness.
• It’s very functional and flexible, so you can decide what you want to check and in which way.
• The support system is present, so you can contact them in case you have any questions about this checker’s usage.
• It’s very thorough in actual plagiarism checking. Even the smallest moments are usually caught, so its accuracy level reaches about 85-95%.

Cons

• To be able to use any of the services of this checker, including plagiarism scanning, you need to create an account.
• The limit of 10 pages (with one page being counted as having 250 words, which is less than generally accepted) runs out quickly, particularly if you are a student who has to compose essays all the time and needs a limitless service.
• For checking of more pages, you will have to pay by purchasing an additional CopyLeaks credit plan.
• The interface of the site isn’t very user-friendly. While the design looks prestigious, too much information is offered at once, which might be a bit overwhelming.
• Due to many photos and big chunks of text, the page loads rather slowly, which can cause problems to those who are browsing from a mobile or have a slow Internet connection.

Pros

• It’s free and doesn’t require you to register if you’re satisfied with the provided word limit.
• It’s functional because you can post and insert your text into a check window or attach a file from your PC.
• Add-ons are available, which can be useful if you’re interested in checking your texts often without having to open this checker’s page over and over again.
• Several groups of people can use it, such as students and article rewriters.
• It’s efficient in detecting plagiarism. Plagiarisma correctly identified the same new text taken from a popular site as plagiarized content. It did miss some phrases, but overall, its level of accuracy and relevancy takes about 85%.

Cons

• It has a limit of 2000 characters, which is about 350 words. Naturally, this is not enough for most people.
• If you want to exceed your limit, you have to register.
• The site isn’t very user-friendly because many colorful elements are present in close proximity to one another. You might be confused when trying to determine what to do.
• The written ad text is full of mistakes, including the word “plagiarism.” This contributes to the feeling of doubt about this checker.
• Even checking a one-page piece of text takes about 40 seconds, which is longer than the majority of similar checkers.

Pros

• It requires no registration or money if the offered word limit and lack of any benefits satisfy you.
• A high level of user-friendliness. Everything looks and feels comfortable and intuitive, so you’ll face no issues when checking your text for plagiarism.
• A great amount of functionality and editing opportunities. You can not only test essays for plagiarism with this checker but also exclude sources that shouldn’t take part in checking process, download detailed PDF report, work with up to 5 papers at the same time, and so on.
• This checker can benefit many groups of individuals, including students and teachers, copywriters, and writers in general.
• Accuracy of plagiarism checking is high, reaching up to 95%. Quetext has rightfully recognized our test text as plagiarized, showing exact sources where it was taken from.

Cons

• The word limit for free and unregistered checking is very small, covering only 1 page. It’s not enough for students in most cases.
• You have to create an account and buy a Pro package to access this service's benefits and use it properly, checking many papers. The price is 9.99$ monthly, which is not high yet still discouraging for many students.
• Without paying, you can count only on a brief superficial checking with no report and no “exclude sources” function.
• The checking process works rather slowly, taking up to several minutes.

Pros

• It offers several services at once that any student will find invaluable.
• It’s completely free and doesn’t require registration, so you won’t have to waste any time or money.
• It covers a vast audience, from students to those operating within SEO checks and other interested businesses and individuals.
• It’s rather user-friendly, with an interface being intuitive enough for you to figure out how to check your text for plagiarism or grammar.
• It’s highly functional, letting you paste your text into a window for plagiarism checking or attach a file for it to be checked.

Cons

• It has a limit of 1000 words, meaning that there would be no point in using it for many people of the potential audience. If you’ve been assigned a short essay, it’s great. But usually, texts are much longer than 1000 words, meaning that this limit will be a serious obstacle.
• Its accuracy in catching plagiarism is rather low, standing at about 50-60%. One of the tests we conducted involved pasting a piece of a text published on one of the popular sites about a month ago into a checkbox, and Dupli Checker thought it was completely unique. It deals with plagiarism detected within academic sources in a more satisfying manner, though.
• Its ad texts are filled with evident grammar mistakes, creating doubts about its trustworthiness.

Pros

• User-friendly. The layout is simple and unobtrusive, mentioning all the important things without cramming them all up in one place. The design looks professional, which adds credibility to the overall impression of Grammarly’s plag checker.
• Very functional. You can pick among different options when checking your text, and each will work very fast, in a matter of seconds, without forcing you to wait at all.
• A detailed report is available once the checking process is completed. There, you can see everything that is wrong with your text, including not only plagiarism but also grammar issues, spelling, style intricacies, sentence structure, punctuation, and so on.
• This checker can be used by all kinds of people, including students, professors, writers, rewriters, and others.
• Grammarly is very thorough in its checking of plagiarism, with its accuracy equaling 95%.

Cons

• You have to create an account and pay to use its services. The package plan isn’t cheap, with a minimum monthly payment of $29.95. Not everyone can afford it.
• It’s misleading. During the test, Grammarly showed 17 issues with the submitted text. After registration, it stated that there were no issues at all. After page reloading, 17 issues emerged again, with an offer to buy a plan. While these issues might be valid, Grammarly's approach isn’t trustworthy and creates suspicions.
• While its reports often highlight truly relevant issues, some are extremely subjective.