What Is a Website Speed Test?
A website speed test measures how quickly a web page loads by breaking down the request into key timing phases: DNS resolution, time to first byte (TTFB), and full content download. Faster load times improve user experience, SEO rankings, and conversion rates.
Understanding the Metrics
- DNS Lookup — Time to resolve the domain name to an IP address
- TTFB (Time to First Byte) — Time until the server sends the first byte of response
- Download Time — Time to download the full page content
- Performance Grade — Overall score based on TTFB thresholds (A < 600ms, B < 1s, C < 2s)