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duolingo.com

https://duolingo.com

C72
Performance 33Accessibility 86SEO 100Best Practices 77

20 technologies detected · Last audited Apr 15, 2026

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Technology stack

Analytics

Google Analytics Google Sign-in Google Tag Manager

Cdn

Nginx

Frontend

Amazon Route 53 Apple Google Search Console Google Workspace Howler.js LottieFiles Microsoft OneTrust Open Graph React React Router Sentry Underscore.js Webpack core-js reCAPTCHA

Frequently asked questions about duolingo.com

What technology does duolingo.com use?

duolingo.com is built with Amazon Route 53, Apple, Google Search Console, Google Workspace, and Howler.js.

Is duolingo.com fast?

No — duolingo.com scores 33/100 on Lighthouse mobile performance, indicating significant optimization opportunities.

Is duolingo.com accessible?

Mostly — duolingo.com scores 86/100 on Lighthouse accessibility, with a handful of automated issues to address.

What CMS does duolingo.com use?

No CMS fingerprint was detected on duolingo.com — it may use a static site generator or a custom application.

Where is duolingo.com hosted?

duolingo.com is served through Nginx.

Does duolingo.com use HTTPS?

Yes — duolingo.com serves traffic over HTTPS.

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2 audits

Apr 15, 2026 23:28 UTC Latest

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Worker: worker-madrid-spain-04

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Scores

Performance 33Accessibility 86Best Practices 77SEO 100PWA 0

Timing

LCP: 14.15 sFirst Contentful Paint: 5.47 sTTFB: 422 msTotal Time: 422 msCumulative Layout Shift: 0.000
Apr 7, 2026 19:59 UTC

/

Worker: worker-madrid-spain-02

View full report →

Scores

Performance 32Accessibility 86Best Practices 77SEO 100PWA 0

Timing

LCP: 22.12 sFirst Contentful Paint: 11.60 sTTFB: 431 msTotal Time: 431 msCumulative Layout Shift: 0.000

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