Check HTTP response latency from several global locations. Free.
The HTTP Latency Map runs requests to your URL from multiple geographic regions (e.g. US, EU, Asia) and shows latency per region. Developers use it to see how location affects response time, to validate CDN or edge routing, or to set expectations for global users. Helps identify high-latency regions and decide where to add edge nodes.
Depends on the tool; common counts are 5–15 regions. Check the tool's list.
Latency is often TCP or HTTP round-trip time, which includes connection and first byte; ping is ICMP and may differ slightly.
Distance, routing, or that region's endpoint may be overloaded or behind a different path.
Your browser request is from one location; the map uses server-side or partner nodes for other regions.
It sends one or a few requests per region; impact is similar to a few users from each region.