Time to First Byte (TTFB) & Latency Benchmark
Measure DNS lookup, TCP handshake, TLS negotiation, and First Byte arrival times.
Response Time & Latency Waterfall
Deep network stage breakdown: DNS lookup, TCP connect, TLS handshake, TTFB, and download duration.
About the Network Latency & TTFB Benchmark
Time to First Byte (TTFB) is a critical Core Web Vital metric representing how long a browser waits for the first byte of data from your web server.
How to Use
Enter any URL to execute a high-precision latency probe that isolates each phase of the network connection.
Understanding Results
A TTFB under 200ms is considered excellent; 200ms–500ms is acceptable; over 800ms indicates slow backend database queries, unoptimized server software, or network bottlenecks.
Frequently Asked Questions
How can I improve slow TTFB?
Use a global CDN, enable server-side page caching, optimize database queries, and upgrade server CPU/RAM.
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