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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
0.21 s
Good Threshold
< 0.8 s
Correlation
Strong
Sample Size
32,034

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 1,465 KB 106 KB 715 KB 3,143 KB
0.4-0.8s 1,335 KB 137 KB 454 KB 2,410 KB
0.8-1.8s 1,336 KB 137 KB 663 KB 2,437 KB
1.8-3s 1,285 KB 168 KB 928 KB 2,590 KB
> 3s 1,164 KB 170 KB 937 KB 2,494 KB

TTFB by Page Type

Page Type Avg. TTFB Pages Rating
Product Page 0.07 s 2,904 Good
Service Page 0.07 s 203 Good
Category Page 0.1 s 427 Good
Home Page 0.12 s 75 Good
Article / Blog Post 0.17 s 3,765 Good
FAQ Page 0.2 s 1,047 Good
Static Page 0.24 s 668 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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