What Is TTFB (Time to First Byte) in SEO?
Use Cases
TTFB helps identify server-side delays impacting page speed and user experience, allowing developers and SEO teams to optimize hosting or backend performance.
Google considers site speed in ranking signals, and a low TTFB contributes to better performance in metrics like First Contentful Paint (FCP) and Largest Contentful Paint (LCP).
SEOs and IT teams use TTFB to compare server speed across hosting services and select the best infrastructure for SEO-critical websites.
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Frequently Asked Questions
Why is TTFB important in SEO?
A lower TTFB improves page speed, which is a ranking factor in search engines and contributes to better user experience and engagement.
What’s a good TTFB time?
A good TTFB is generally under 200 milliseconds. Anything over 500 ms may signal performance issues needing attention.
How can I measure TTFB?
You can measure TTFB using performance tools like Google PageSpeed Insights, Lighthouse, or SpotRise analysis tools.
Does TTFB affect mobile SEO?
Yes. Content Delivery Networks (CDNs) cache content closer to users, helping reduce TTFB by minimizing server response distance and time.
Can a CDN improve TTFB?
No, TTFB is one part of total load time. It measures the server response, while load time includes rendering and resource loading.
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