TTFB Checker
Measure your server's initial response time instantly. The most critical metric for SEO and User Experience.
Why TTFB Matters?
Time to First Byte (TTFB) is simply the time it takes for a user's browser to receive the first byte of data from your server. It is the starting gun of the web performance race.
01First Impression
TTFB is literally the first impression your server makes. A slow TTFB means the user sees a blank white screen for longer. No matter how optimized your frontend is, if the server is slow to respond, the experience starts badly.
02Google Core Web Vitals
While TTFB is not a Core Web Vital itself, it directly affects LCP (Largest Contentful Paint). If the server takes 1 second just to start sending data, it's mathematically impossible to have a 0.8s LCP. Low TTFB is the foundation of good vitals.
What is a Good TTFB?
How We Measure
Our tool performs a direct HTTP request to the target server from our high-performance cloud infrastructure, measuring the strictly server-side processing time.
DNS Lookup
We first resolve the domain name to an IP address.
TCP Handshake
We establish a secure connection with the server.
SSL/TLS
We complete the secure handshake measurements.
Request & Wait
We measure the crucial 'waiting' phase for the first byte.
Need Faster Hosting?
We have tested and ranked the world's best hosting providers based on real TTFB data.
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