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Advanced Page Speed Test

Core Web Vitals Analysis - Mobile & Desktop

Result for: jd.com

Tested at: 2026-04-21 02:26:18

📱 Mobile Insights
85

优秀

First Contentful Paint 0.51s Good
Largest Contentful Paint 0.62s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 500ms Poor
Speed Index 0.34s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup101ms
TCP Connection204ms
SSL Handshake111ms
Server Response (TTFB)421ms
Content Download0ms
Total422ms

📄 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
🖥️ Desktop Insights
85

优秀

First Contentful Paint 0.33s Good
Largest Contentful Paint 0.48s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 500ms Poor
Speed Index 0.22s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup4ms
TCP Connection90ms
SSL Handshake95ms
Server Response (TTFB)276ms
Content Download0ms
Total276ms

📄 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