Free TTFB Testing Tool

Test Your TTFB

Measure Time To First Byte from ... global locations. Optimize your server response time and improve website performance.

Excellent

< 200ms

Lightning fast response time. Your server is optimized!

Good

200-500ms

Acceptable performance. Room for optimization.

Poor

> 500ms

Slow response. Consider upgrading your hosting.

What is TTFB?

Time To First Byte (TTFB) measures how long it takes for your browser to receive the first byte of data from a web server after making a request. It's a critical metric for website performance and includes:

DNS lookup time - Finding the server's IP address
Connection time - Establishing the TCP connection
SSL/TLS negotiation - Setting up secure connections
Server processing time - Generating the response