About Copyleaks

Category: Plagiarism Checker
Copyleaks is an AI-powered plagiarism detection application that goes beyond the word-for-word match approach and identifies paraphrased and similar meaning text. It is designed to help schools and businesses verify content authenticity while cautioning against copyright infringement.

Company: Copyleaks, Inc.

Copyleaks was established in 2015 by military veterans who had training in developing AI and machine learning algorithms for intelligence units. The founders wanted a solution that would help protect their website from copied content. The company had significant growth over the years and now partners with prestigious companies and universities like Cisco, Accenture, SEMRush, Stanford University, and Oakland University.

In-Depth Analysis

0 Overall
Price 4.0
Performance 4.0
Ease Of Use 5.0
Features 5.0
Support 3.0


  • Free pages every month
  • Simplistic and highly intuitive interface
  • Highly accurate plagiarism results
  • Affordable pricing


  • Slow scanning performance
  • Limited integrations

Copyleaks Comparisons

Plans & Pricing
100 Pages (25K Words)
Free 20 pages/mo
10-Day Money-Back Guarantee only if credits/pages weren’t used
  • Comprehensive plagiarism scan
  • Compare student assignments
  • Copyshield
  • Text compare
  • 100+ languages support
  • Education Data Hub
500 Pages (62.5K Words)
Free 20 pages/mo
10-Day Money-Back Guarantee only if credits/pages weren’t used
  • Everything in the 100 Pages plan
1,000 Pages (125K Words)
Free 20 pages/mo
10-Day Money-Back Guarantee only if credits/pages weren’t used
  • Everything in the 100 Pages plan
10,000+ Pages (2.5M Words)
Free 20 pages/mo
10-Day Money-Back Guarantee only if credits/pages weren’t used
  • Everything in the 100 Pages plan



Copyleaks performance of accuracy of report

After thorough testing, I found Copyleaks to be highly accurate regarding plagiarism detection. I tested the same 10 articles I used for my PlagScan review. Some of them had blatantly copied paragraphs, while others had paraphrased texts. Unlike PlagScan, Copyleaks was able to detect all these instances, even finding additional sources I didn’t intentionally copy from.

I also tried out the Cheat Detection feature to see if it can catch manipulated characters in phrases. For the two documents made explicitly for this test, Copyleaks detected cheating.

Copyleaks report performance with similarity score

The results from my testing prove that Copyleaks regularly updates its database to include even sources from 2022.

However, its accuracy comes at a price, as the scanning process is slow. For just 250 words, the tool took 2 minutes and 15 seconds to finish. When I bumped up the word count to 500, I had to wait for about 4 minutes.

Overall, the tool is very reliable in checking for content authenticity. I can forgive the speed if I am assured of quality results.

Ease of Use

Copyleaks’ user interface is one of the most intuitive for plagiarism checkers. While the tool has many notable features to keep track of, they are all neatly organized and displayed. This allows for easy navigation and a streamlined user experience.

Copyleaks ease of use uploading document

Each component also has an accompanying help icon, which is a nice touch. A small window pops up with more information about that particular feature when you click on the icon. This is helpful for users who may not be familiar with all the bells and whistles of a plagiarism checker.

Even the additional features are intuitive. For example, Text Compare allows you to add more slots in case you need to upload multiple files. You can delete them as quickly as you add them since the buttons are placed in obvious locations.

As for integrations, Copyleaks has support for LMS like Moodle and Canvas. It does not have add-ons for Google Docs and Microsoft Word. The company makes up for this by providing its API. Copyleaks also originally offered mobile versions, but they are unavailable now. According to the help center, they are currently being updated.

Customer Support

Copyleaks offers only basic support channels for customers, but each option is comprehensive or responsive. The web application’s help center is easy to use and contains a lot of information, while the customer support team quickly responds to inquiries.

Copyleaks’ only live support channel is through its contact form, so I decided to try it out and see how prompt their support team is. I sent an inquiry regarding future integrations for Copyleaks. I got an auto-reply email initially, notifying me that the team would get in touch in the span of 3 business days. Fortunately, a representative was able to send a brief yet courteous reply within 4 hours.

Copyleaks email support response

Next, I explored the web application’s help center, which consists of FAQ categories. The design layout makes finding the answers you’re looking for easy, and the FAQ categories also help speed up your search. The search function itself is decent, but it pulls up results for exact word matches. For example, the word “integrations” will generate different help results than the word “integration.”

Lastly, I tested the chatbot to see if it could give me quality answers. I found that it functions similarly to the app’s search capability, wherein it would give you exact match results for your inquiry.

24/7 Help & Support
24/7 Help & Support
In the form of a chatbot
There is an option for all users to email the support team.
Video Tutorials
Video Tutorials
Can be found on their YouTube page
The FAQ covers basic and advanced software-related issues.
Blog available on the website.
Features & Functionality
General Features

Plagiarism Scan

Copyleaks features for plagiarism checker

Copyleak’s primary feature uses AI and machine learning to scan documents for plagiarized, paraphrased, and manipulated content. The tool checks against an extensive database of web pages, academic papers, and published works.

Cheat Detection

To cheat the plagiarism scan system, some users try to use hidden or special characters to mask their copied text. This feature is designed to detect those characters within a scanned document.

Text Compare

Document breakdown analysis - Copyleaks

Text Compare allows users to upload and compare two files against each other. The feature will generate a report of identical text, minor changes, related meaning, and similarity percentage. While this is initially meant for users who want to check against reference documents, it is also useful for those who want to compare different versions of their drafts.


Copyshield is a security feature that monitors the web for any plagiarized content from your website. The tool will give you a report of sources that feature stolen content and caution the plagiarizers themselves of said content. For Copyshield to work, you simply need to add your website’s URL to the tool, and then insert the tracking code provided in your website’s code.

Multi-Language Capability

Copyleaks can scan documents in over 100+ languages, including Chinese, Arabic, German, Greek, and Japanese. However, scans will only be done in the same language as the reference document. For instance, Copyleaks will only check a Spanish document for plagiarism against Spanish sources.

  • Plagiarism Check
  • Style Editor
  • Citation Finder
  • Content Scan
  • Text Similarity Detection
  • Reporting/Analytics
  • Multiple File Format Support
  • Spell Checker
  • Grammar Check
  • Tone Check
  • Sentence Formatting
  • Style Editor
  • Vocabulary Recommendations
  • Sentence Rephrasing
  • Dictionary
Product Type
  • Standalone Application
  • Plugin
  • Browser Application
  • Desktop Application
Database Type
  • Custom Database
  • Internet Content
  • Proprietary Database
  • Academic Databases

Copyleaks not only delivers on its promise of delivering accurate plagiarism results, it also exceeds expectations with the additional features it offers. Furthermore, its interface is clean and simplistic, perhaps one of the best among its competitors.

Copyleaks also provides 20 free pages every month, which is ideal for the occasional user. The company offers reasonable pricing for those who want more pages checked.

The only areas it needs improvement in are its performance speed and perhaps more support channels. Other than that, Copyleaks is an excellent plagiarism detection software worth checking out.

Noah Edis
Author: Noah Edis
Noah Edis is a freelance writer and systems engineer with a wealth of experience in modern hardware and software. When he's not working on his latest project, you can find him playing competitive dodgeball or pursuing his personal interest in programming.
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