Time to first byte
Guidance href="#guidance"
Core Web Vitals assessment grades a successful time to first byte response as less than or equal to 0.8 seconds.
Time to first byte (TTFB) is one of the performance Core Web Vitals metrics that help ensure passable user experience for visitors on all devices and affect a site’s search engine ranking.
About href="#about"
Time to first byte measures how fast your server is responds.
This is the first step in the performance pipeline. If this is not fast it is difficult to pass other metrics that depend on it.
More information on the time to first byte metric from web.dev
The data ScanGov uses to evaluate sites is provided by the Chrome user experience report. This dataset is compiled from real visitor data each domain. Sites with low traffic will not have any data available in the Chrome user experience report. In that case we run our own lighthouse audit.
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