TOOLS

Global HTTP Response-Time Checker

Test your website's TTFB (Time to First Byte) and total response time from 70+ locations worldwide. See how fast your site loads from different continents. Free to use. No signup required.

We'll test from 10 geographically diverse locations in parallel. Results include TTFB, total response time, and HTTP status.

Results for

Tested from of + available locations

Successful
Avg TTFB
Min TTFB
Max TTFB

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HTTP Response-Time

Measure TTFB and response time from multiple continents.

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Need continuous monitoring?

Monitor your website 24/7 from all 70+ locations with instant alerts when response times spike.

Start monitoring for $5/month

FAQs

What is TTFB (Time to First Byte)?
TTFB measures the time from when the browser sends a request until it receives the first byte of the response. It includes DNS lookup, TCP connection, TLS handshake, and server processing time. Lower TTFB means faster initial page load.
What's a good TTFB?
For optimal performance: under 200ms is excellent (green), 200-500ms is acceptable (yellow), and over 500ms needs improvement (red). CDNs and edge caching can significantly reduce TTFB for global audiences.
Why does TTFB vary by location?
TTFB is affected by physical distance (network latency), CDN presence, server location, and regional internet infrastructure. Using a CDN or edge servers can provide consistent TTFB globally.
How is this different from ping?
Ping uses ICMP to test basic network connectivity and latency. HTTP tests measure actual web server performance including SSL/TLS handshake, server processing, and content delivery. HTTP tests better reflect real user experience.