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Advanced Page Speed Test

Core Web Vitals Analysis - Mobile & Desktop

Result for: douyin.com

Tested at: 2026-04-21 02:28:31

📱 Mobile Insights
74

良好

First Contentful Paint 2.85s Needs Work
Largest Contentful Paint 2.57s Needs Work
Cumulative Layout Shift 0.01 Good
Total Blocking Time 180ms Needs Work
Speed Index 1.9s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup3ms
TCP Connection1113ms
SSL Handshake906ms
Server Response (TTFB)2372ms
Content Download0ms
Total2372ms

📄 Page Info

Page Size 2 KB
HTTP Status 200

⚠️ Issues Found

⚠️

Render Blocking Resources

1 CSS/JS files block rendering

Impact: High
⚠️

Slow Server Response

2372ms TTFB

Impact: High
🖥️ Desktop Insights
92

优秀

First Contentful Paint 1.46s Good
Largest Contentful Paint 1.42s Good
Cumulative Layout Shift 0.01 Good
Total Blocking Time 180ms Needs Work
Speed Index 0.98s Good

⏱️ Timing Breakdown

DNS
Connect
SSL
Server
Download
DNS Lookup3ms
TCP Connection89ms
SSL Handshake582ms
Server Response (TTFB)1220ms
Content Download0ms
Total1220ms

📄 Page Info

Page Size 2 KB
HTTP Status 200

⚠️ Issues Found

⚠️

Render Blocking Resources

1 CSS/JS files block rendering

Impact: High
⚠️

Slow Server Response

1220ms TTFB

Impact: High