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cal.com

https://www.cal.com

C76
Performance 40Accessibility 86SEO 100Best Practices 96

13 technologies detected · Last audited Apr 7, 2026

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Technology stack

Analytics

PostHog Twitter Ads

Cdn

Cloudflare

Cms

Framer Sites

Frontend

Cloudflare Bot Management Framer Motion Google Font API HSTS Open Graph Priority Hints React Svelte

Hosting

Vercel

Frequently asked questions about cal.com

What technology does cal.com use?

cal.com is built with Framer Sites, Cloudflare Bot Management, Framer Motion, Google Font API, and HSTS.

Is cal.com fast?

No — cal.com scores 40/100 on Lighthouse mobile performance, indicating significant optimization opportunities.

Is cal.com accessible?

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

What CMS does cal.com use?

cal.com runs on Framer Sites.

Where is cal.com hosted?

cal.com is hosted on Vercel.

Does cal.com use HTTPS?

Yes — cal.com serves traffic over HTTPS.

1 audits

Apr 7, 2026 20:42 UTC Latest

/

Worker: worker-amsterdam-nl-01

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Scores

Performance 40Accessibility 86Best Practices 96SEO 100PWA 0

Timing

LCP: 6.27 sFirst Contentful Paint: 3.94 sTTFB: 73 msTotal Time: 74 msCumulative Layout Shift: 0.002

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