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Advanced Page Speed Test

Core Web Vitals Analysis - Mobile & Desktop

Result for: jd.com

Tested at: 2026-04-27 21:36:46

📱 Mobile Insights
77

良好

First Contentful Paint 2.33s Needs Work
Largest Contentful Paint 2.14s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 500ms Poor
Speed Index 1.55s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup542ms
TCP Connection1634ms
SSL Handshake209ms
Server Response (TTFB)1943ms
Content Download0ms
Total1943ms

📄 Page Info

Page Size 14 KB
HTTP Status 200

⚠️ Issues Found

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Render Blocking Resources

20 CSS/JS files block rendering

Impact: High
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Too Many Scripts

17 JS files, consider bundling

Impact: Medium
⚠️

Slow Server Response

1943ms TTFB

Impact: High
🖥️ Desktop Insights
85

优秀

First Contentful Paint 1.66s Good
Largest Contentful Paint 1.58s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 500ms Poor
Speed Index 1.11s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup487ms
TCP Connection610ms
SSL Handshake635ms
Server Response (TTFB)1381ms
Content Download0ms
Total1382ms

📄 Page Info

Page Size 14 KB
HTTP Status 200

⚠️ Issues Found

⚠️

Render Blocking Resources

20 CSS/JS files block rendering

Impact: High
💡

Too Many Scripts

17 JS files, consider bundling

Impact: Medium
⚠️

Slow Server Response

1381ms TTFB

Impact: High