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calendly.com

https://calendly.com

C74
Performance 28Accessibility 99SEO 92Best Practices 77

29 technologies detected · Last audited Apr 16, 2026

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Technology stack

Analytics

Google Analytics Google Tag Manager PayPal Statsig Zoominfo

Backend

Turbopack styled-components

Cdn

Amazon CloudFront Amazon S3 Cloudflare

Cms

Contentful

Frontend

Apple Calendly Cloudflare Bot Management Facebook Google Search Console Google Workspace HSTS Microsoft OneTrust Open Graph Priority Hints React Segment Webpack

Hosting

AWS Amazon Web Services Next.js Next.js App Router

Frequently asked questions about calendly.com

What technology does calendly.com use?

calendly.com is built with Contentful, Apple, Calendly, Cloudflare Bot Management, and Facebook.

Is calendly.com fast?

No — calendly.com scores 28/100 on Lighthouse mobile performance, indicating significant optimization opportunities.

Is calendly.com accessible?

Yes — calendly.com scores 99/100 on Lighthouse accessibility, meeting most WCAG-aligned automated checks.

What CMS does calendly.com use?

calendly.com runs on Contentful.

Where is calendly.com hosted?

calendly.com is hosted on AWS.

Does calendly.com use HTTPS?

Yes — calendly.com serves traffic over HTTPS.

2 audits

Apr 16, 2026 17:30 UTC Latest

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Worker: worker-santaclara-us-01

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Scores

Performance 28Accessibility 99Best Practices 77SEO 92PWA 0

Timing

LCP: 23.37 sFirst Contentful Paint: 4.43 sTTFB: 174 msTotal Time: 224 msCumulative Layout Shift: 0.000
Apr 7, 2026 20:42 UTC

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Worker: worker-madrid-spain-02

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Scores

Performance 11Accessibility 98Best Practices 77SEO 92PWA 0

Timing

LCP: 16.94 sFirst Contentful Paint: 3.17 sTTFB: 91 msTotal Time: 91 msCumulative Layout Shift: 0.849

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