duolingo.com
Last scanned Jun 22, 2026
duolingo.com received a strong 76 out of 100 in its WCAG 2.2 accessibility review conducted on June 22, 2026. The review found 4 distinct accessibility violations totalling 1075 instances, including 52 critical, 1005 serious, 18 moderate issues. The most pressing issues include insufficient colour contrast (WCAG 1.4.3), 1005 instances; images missing alternative text (WCAG 1.1.1), 42 instances; and heading levels skipped (WCAG 1.3.1), 18 instances. The assessment covered 10 pages across 55 unique page templates. The site relies on OneTrust as its consent management platform with Google Consent Mode v2, but does not implement IAB TCF v2.3. 142 third-party requests were detected from 9 vendors.
WCAG AA
duolingo.com
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+ 457 more issues (on 10 pages)
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Claim & unlock all · 56 pages+ 457 more issues (on 10 pages)
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Claim & unlock all · 56 pagesScan Coverage
Score is based on 10 structurally unique pages representing 56 discovered URLs.
Key Accessibility Issues
1075 violations found across 4 rules — 52 critical, 1005 serious, 18 moderate, 0 minor
Ensures the contrast between foreground and background colors meets WCAG 2 AA minimum contrast ratio thresholds
WCAG 1.4.3 · 1005 instances found · How to fix →
Ensures <img> elements have alternate text or a role of none or presentation
WCAG 1.1.1 · 42 instances found · How to fix →
Page has multiple <h1> headings — there should be only one
WCAG 1.3.1 · 18 instances found · How to fix →
Ensures <meta name="viewport"> does not disable text scaling and zooming
WCAG 1.4.4 · 10 instances found
Cookie Consent & Compliance
duolingo.com relies on OneTrust as its consent management platform. The site does not implement IAB TCF v2.3, which means consent signals are not standardised for programmatic advertising vendors. Learn about cookie consent requirements.
Get free cookie consent for duolingo.com — including IAB TCF v2.3 and Google Consent Mode v2.
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Third-Party Trackers
142 requests detected from 9 vendors — Google LLC, Amazon, Google, UNPKG, Volentio JSD...
Third-Party Trackers
142 requests detected from 9 vendors — Google LLC, Amazon, Google, UNPKG, Volentio JSD...
Analytics
20
Marketing
2
Necessary
34
Functional
0
Other
0
| Vendor | Category | Type | Domain |
|---|---|---|---|
| Google LLC | Analytics | script | www.googletagmanager.com |
| Amazon | Essential | script | d35aaqx5ub95lt.cloudfront.net |
| Essential | script | i.ytimg.com | |
| Essential | script | www.gstatic.com | |
| Essential | script | yt3.ggpht.com | |
| Essential | script | jnn-pa.googleapis.com | |
| UNPKG | Essential | script | unpkg.com |
| Volentio JSD | Essential | script | cdn.jsdelivr.net |
| Google LLC | Marketing | iframe | www.youtube.com |
| Cloudflare Inc. | Necessary | script | cdnjs.cloudflare.com |
| Google LLC | Necessary | script | fonts.gstatic.com |
| OneTrust LLC | Necessary | script | cdn.cookielaw.org |
| Other | script | region1.google-analytics.com | |
| Other | script | www.google-analytics.com | |
| Other | script | www.recaptcha.net | |
| Other | script | ad.doubleclick.net | |
| Other | script | googleads.g.doubleclick.net | |
| OneTrust | Other | script | geolocation.onetrust.com |
| Microsoft | Social | script | media.licdn.com |
Cookies
18 cookies detected — 0 necessary, 6 analytics, 0 marketing
Cookies
18 cookies detected — 0 necessary, 6 analytics, 0 marketing
Total
18
Necessary
0
Functional
1
Analytics
6
Marketing
0
Unknown
11
| Name | Domain | Category | Provider | Expiry | Secure | HttpOnly | Party |
|---|---|---|---|---|---|---|---|
| _ga | .duolingo.com | Analytics | Google Analytics | 1.1 yr | — | — | 1st |
| _gat_gtag_UA_21595814_15 | .duolingo.com | Analytics | Google Analytics | Expired | — | — | 1st |
| _ga_HGQ44MW2G4 | .duolingo.com | Analytics | Google Analytics | 1.1 yr | — | — | 1st |
| _ga_M7TFDFVXWN | .duolingo.com | Analytics | Google Analytics | 1.1 yr | — | — | 1st |
| _gcl_au | .duolingo.com | Analytics | Google Analytics | 88 d | — | — | 1st |
| _gid | .duolingo.com | Analytics | Google Analytics | Expired | — | — | 1st |
| lang | .duolingo.com | Functional | Language | 363 d | — | — | 1st |
| AWSALB | www.duolingo.com | Unknown | — | 5 d | — | — | 1st |
| AWSALBCORS | www.duolingo.com | Unknown | — | 5 d | ✓ | — | 1st |
| g_state | www.duolingo.com | Unknown | — | 178 d | — | — | 1st |
| initial_referrer | .duolingo.com | Unknown | — | 363 d | — | — | 1st |
| logged_out_uuid | .duolingo.com | Unknown | — | 363 d | — | — | 1st |
| lp | .duolingo.com | Unknown | — | 363 d | — | — | 1st |
| lr | .duolingo.com | Unknown | — | 363 d | — | — | 1st |
| lu | .duolingo.com | Unknown | — | 363 d | — | — | 1st |
| OptanonConsent | .duolingo.com | Unknown | — | 178 d | — | — | 1st |
| tsl | .duolingo.com | Unknown | — | 363 d | — | — | 1st |
| wuuid | www.duolingo.com | Unknown | — | Session | — | — | 1st |
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