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react.dev

https://react.dev

C75
Performance 59Accessibility 95SEO 92Best Practices 100

15 technologies detected · Last audited Apr 4, 2026

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Technology stack

Analytics

Google Analytics Google Tag Manager

Cdn

Vercel Edge

Frontend

Algolia Algolia DocSearch Cloudflare Google Search Console HSTS Open Graph RSS React Tailwind CSS Webpack

Hosting

Next.js Vercel

Frequently asked questions about react.dev

What technology does react.dev use?

react.dev is built with Algolia, Algolia DocSearch, Cloudflare, Google Search Console, and HSTS.

Is react.dev fast?

Somewhat — react.dev scores 59/100 on Lighthouse mobile performance, below the median audited site.

Is react.dev accessible?

Yes — react.dev scores 95/100 on Lighthouse accessibility, meeting most WCAG-aligned automated checks.

What CMS does react.dev use?

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

Where is react.dev hosted?

react.dev is hosted on Next.js.

Does react.dev use HTTPS?

Yes — react.dev serves traffic over HTTPS.

1 audits

Apr 4, 2026 16:44 UTC Latest

/

Worker: worker-singapore-sg-01

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Scores

Performance 59Accessibility 95Best Practices 100SEO 92PWA 0

Timing

LCP: 7.10 sFirst Contentful Paint: 1.27 sTTFB: 5.08 sTotal Time: 5.08 sCumulative Layout Shift: 0.000

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