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Advanced Page Speed Test

Core Web Vitals Analysis - Mobile & Desktop

Result for: stackoverflow.com

Tested at: 2026-08-23 17:34:27

📱 Mobile Insights
92

优秀

First Contentful Paint 2.07s Needs Work
Largest Contentful Paint 1.92s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 80ms Good
Speed Index 1.38s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup81ms
TCP Connection1300ms
SSL Handshake210ms
Server Response (TTFB)1723ms
Content Download2ms
Total1725ms

📄 Page Info

Page Size 5 KB
HTTP Status 403

⚠️ Issues Found

⚠️

Slow Server Response

1723ms TTFB

Impact: High
🖥️ Desktop Insights
100

优秀

First Contentful Paint 0.96s Good
Largest Contentful Paint 1s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 80ms Good
Speed Index 0.64s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup1ms
TCP Connection199ms
SSL Handshake202ms
Server Response (TTFB)801ms
Content Download1ms
Total801ms

📄 Page Info

Page Size 5 KB
HTTP Status 403