What Time to First Byte (TTFB) measures
Measures server responsiveness by timing how long it takes for the browser to receive the first byte of HTML.
Glossary: Time to First Byte (TTFB)
Time to First Byte (TTFB)
Measures server responsiveness by timing how long it takes for the browser to receive the first byte of HTML.
How to measure Time to First Byte (TTFB)
Evaluate backend latency from the first request to the first response byte in production traffic.
Why it matters
High TTFB delays page rendering and slows every subsequent metric, making the experience feel sluggish.
Metric monitoring made continuous
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