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Time to First Byte (TTFB): Impact on Search Performance

Measures server responsiveness. How long the server takes to respond.

Global Average
0.2 s
Good Threshold
< 0.8 s
Correlation
Moderate
Sample Size
34,917

Search Impressions by TTFB Range

How search visibility changes as TTFB gets slower

Click-Through Rate by TTFB Range

Average CTR for pages in each TTFB bucket

Average Position by TTFB Range

Where pages rank based on their TTFB performance

Resource Budget by TTFB Range

Average resource sizes for pages in each performance bucket

TTFB Range JS CSS Images Total
< 0.4s 1,459 KB 111 KB 698 KB 3,061 KB
0.4-0.8s 1,061 KB 126 KB 559 KB 2,241 KB
0.8-1.8s 1,335 KB 140 KB 656 KB 2,421 KB
1.8-3s 1,283 KB 165 KB 964 KB 2,623 KB
> 3s 1,180 KB 169 KB 1,212 KB 2,825 KB

TTFB by Page Type

Page Type Avg. TTFB Pages Rating
Product Page 0.07 s 3,402 Good
Service Page 0.08 s 287 Good
Home Page 0.1 s 95 Good
Category Page 0.11 s 554 Good
Article / Blog Post 0.14 s 5,971 Good
FAQ Page 0.16 s 1,760 Good
Static Page 0.2 s 918 Good

Frequently Asked Questions

What TTFB is acceptable?

Google considers TTFB under 0.8 seconds as 'Good'. TTFB is a server-side metric that affects all subsequent loading milestones. Our data shows a clear correlation with search rankings.

Other Metrics

LCP CLS INP FCP FID SI

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