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stackoverflow.com

https://stackoverflow.com

C73
Performance 31Accessibility 87SEO 82Best Practices 73

10 technologies detected · Last audited Apr 4, 2026

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Technology stack

Cdn

Cloudflare

Frontend

AngularJS Apple Cloudflare Bot Management Cloudflare Turnstile Google Search Console Google Workspace HSTS Microsoft X-Clacks-Overhead

Frequently asked questions about stackoverflow.com

What technology does stackoverflow.com use?

stackoverflow.com is built with AngularJS, Apple, Cloudflare Bot Management, Cloudflare Turnstile, and Google Search Console.

Is stackoverflow.com fast?

No — stackoverflow.com scores 31/100 on Lighthouse mobile performance, indicating significant optimization opportunities.

Is stackoverflow.com accessible?

Mostly — stackoverflow.com scores 87/100 on Lighthouse accessibility, with a handful of automated issues to address.

What CMS does stackoverflow.com use?

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

Where is stackoverflow.com hosted?

stackoverflow.com is served through Cloudflare.

Does stackoverflow.com use HTTPS?

Yes — stackoverflow.com serves traffic over HTTPS.

1 audits

Apr 4, 2026 16:08 UTC Latest

/

Worker: worker-amsterdam-nl-01

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Scores

Performance 31Accessibility 87Best Practices 73SEO 82PWA 0

Timing

LCP: 13.64 sFirst Contentful Paint: 4.17 sTTFB: 148 msTotal Time: 148 msCumulative Layout Shift: 0.000

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