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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
0.38 s
Good Threshold
< 0.8 s
Correlation
Moderate
Sample Size
30,023

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 1,336 KB 100 KB 587 KB 2,695 KB
0.4-0.8s 1,547 KB 128 KB 558 KB 2,903 KB
0.8-1.8s 1,348 KB 129 KB 1,465 KB 3,385 KB
1.8-3s 1,210 KB 145 KB 797 KB 2,717 KB
> 3s 1,238 KB 170 KB 1,314 KB 2,973 KB

TTFB by Page Type

Page Type Avg. TTFB Pages Rating
Service Page 0.22 s 169 Good
Product Page 0.23 s 2,128 Good
Home Page 0.24 s 60 Good
Static Page 0.32 s 479 Good
FAQ Page 0.34 s 829 Good
Article / Blog Post 0.35 s 2,680 Good
Category Page 0.41 s 342 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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