Verisite checked duolingo.com on July 8, 2026 and gave it a trust score of 39/100. Out of 102 checks, 59 passed, with 21 warning(s) and 22 failed check(s).
Trust Score
Insufficient
Score incl. subdomains: 66/100
Technology
Yes, duolingo.com is generally trustworthy with a score of 89. However, there are some important considerations you should be aware of.
Duolingo is the world's most popular way to learn a language. The platform offers free, fun, and scientifically proven methods for learning a new language online or through apps.
Checks HTTP security headers and cookie security configuration.
Checks for exposed sensitive files, directory listings, and information disclosure.
Scans page content for suspicious scripts, iframes, external forms, and cryptominers.
Verifies the SSL/TLS certificate validity and configuration.
Checks the age of the domain registration. Very young domains are often associated with fraud.
Checks for tracking cookies, consent mechanisms, and third-party trackers.
Checks for chamber of commerce number, VAT number, contact details, and required legal pages.
Checks external reviews (Trustpilot) and trust seals (Kiyoh, WebwinkelKeur).
Checks if the domain appears on known fraud or phishing lists.
Detects CMS, frameworks, and JavaScript libraries and checks for outdated versions.
Analyzes SPF, DKIM and DMARC configuration for email authentication.
Checks open ports, HTTP protocol support, redirect chain, and mixed content.
Checks DNS records, server information and hosting details.
Checks HTTP security headers and cookie security configuration.
Detects CMS, frameworks, and JavaScript libraries and checks for outdated versions.
Checks for exposed sensitive files, directory listings, and information disclosure.
Analyzes SPF, DKIM and DMARC configuration for email authentication.
Checks the age of the domain registration. Very young domains are often associated with fraud.
Checks for tracking cookies, consent mechanisms, and third-party trackers.
Checks open ports, HTTP protocol support, redirect chain, and mixed content.
Scans page content for suspicious scripts, iframes, external forms, and cryptominers.
Checks for chamber of commerce number, VAT number, contact details, and required legal pages.
Checks external reviews (Trustpilot) and trust seals (Kiyoh, WebwinkelKeur).
Checks if the domain appears on known fraud or phishing lists.
Verifies the SSL/TLS certificate validity and configuration.
Checks DNS records, server information and hosting details.
Duolingo is a popular online language learning platform where users can access lessons in various languages for free. The website is designed to make learning engaging and interactive, incorporating gamification elements that enhance user motivation. Duolingo has established a strong reputation in the technology sector and is used by millions of people worldwide.
The site features several key strengths, including a perfect technology score (100) and a high privacy score (98). However, there are also some shortcomings that require attention, such as the lack of security headers and a low score for user reviews.
While Duolingo has a high score, there are some risks associated with using the site. The absence of security headers means that your data may not be adequately protected. Additionally, the low user review score indicates that negative experiences have been reported by other users, which can affect your trust in the service.
This section is not applicable as there is no previous score available.
Verisite is an independent platform that conducts automated trust checks on websites. This specific score of 89 indicates that Duolingo is generally trustworthy, but there are some risks for visitors, particularly regarding data security and user experience. For the company itself, this means there is room for improvement, especially in customer feedback and security.