Free Internet Stability Test and Connection Monitor
InternetSignalTest continuously checks HTTP reachability from your browser to help identify intermittent connection problems. Monitor latency, jitter, probe failures, and outage events over time without installing software.
What the test measures
- Latency
- HTTP request response time in milliseconds.
- Jitter
- Variation between consecutive successful probes.
- Probe failures
- Requests that time out or cannot reach the selected target.
- Connection health
- A grade based on recent latency and failed probes.
How the browser test works
Browsers cannot send raw ICMP ping packets, so InternetSignalTest times repeated HTTP requests to a selected public endpoint. Use the results to identify trends and intermittent disruptions rather than as a replacement for network-level diagnostics.