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Advanced Page Speed Test

Core Web Vitals Analysis - Mobile & Desktop

Result for: stackoverflow.com

Tested at: 2026-04-21 00:37:38

📱 Mobile Insights
100

优秀

First Contentful Paint 0.02s Good
Largest Contentful Paint 0.22s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 80ms Good
Speed Index 0.01s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup4ms
TCP Connection6ms
SSL Handshake6ms
Server Response (TTFB)17ms
Content Download0ms
Total18ms

📄 Page Info

Page Size 5 KB
HTTP Status 403
🖥️ Desktop Insights
100

优秀

First Contentful Paint 0.03s Good
Largest Contentful Paint 0.22s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 80ms Good
Speed Index 0.02s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup1ms
TCP Connection3ms
SSL Handshake9ms
Server Response (TTFB)23ms
Content Download0ms
Total23ms

📄 Page Info

Page Size 5 KB
HTTP Status 403