Free Server Response Time Checker — Diagnose Slow TTFB
Measure your server response time and identify whether TTFB issues stem from DNS, TCP, SSL, or server processing — and get specific recommendations.
Free — no account required for a single check. Sign up for continuous monitoring →
What the Server Response Time Checker checks
Total TTFB in ms
DNS resolution time
TCP handshake time
SSL negotiation time
Server processing time
HTTP vs HTTPS performance gap
How it works
Makes HTTP requests using detailed timing capture (Navigation Timing API equivalent) to decompose TTFB into its constituent phases.
Monitor continuously — not just once
This free tool runs a one-off check. AuditJet monitors your site on a schedule — alerting you when scores change, before performance regressions affect your rankings and revenue.
Server Response Time Checker — FAQ
Is the Server Response Time Checker free?
Yes — Server Response Time Checker is completely free to use. No account required for a single-URL check.
How does the Server Response Time Checker work?
Makes HTTP requests using detailed timing capture (Navigation Timing API equivalent) to decompose TTFB into its constituent phases.
What does the Server Response Time Checker check?
Total TTFB in ms. DNS resolution time. TCP handshake time. SSL negotiation time. Server processing time. HTTP vs HTTPS performance gap.
How is this different from Google PageSpeed Insights?
Google PageSpeed Insights is a one-off manual tool. AuditJet adds continuous monitoring, regression alerting, and revenue impact on top of the same performance analysis — so you're notified when scores change, not just when you remember to check.