Why are results noisy?

Wi-Fi, DNS caching, and shared browser tabs all add jitter. Increase sample size.

Can I test WebSockets?

No. This tool measures HTTP request/response timing only.

Latency Checker

In the same workflow: Retry Simulator and Rate Limit Tester.

Latency Checker

Measure response time (latency) for an endpoint. Run multiple requests and see min, max, and average.

Endpoint URL

Requests

Related tools

Status Code Tester — single request status and time
Retry Simulator — retries with backoff
REST Endpoint Tester — full request/response

Why use Latency Checker?

Users feel variance, not averages. Fire multiple timed requests to see min, max, and mean latency for an HTTP endpoint. Use it to compare regions, CDN tweaks, or cold-start behavior without standing up dedicated monitoring yet.

Practical tips

Warm the connection with a throwaway request before recording samples.
Run during peak and off-peak hours to separate code issues from congestion.
Correlate spikes with API Response Analyzer output for status and body changes.

Common questions

Why are results noisy?: Wi-Fi, DNS caching, and shared browser tabs all add jitter. Increase sample size.
Can I test WebSockets?: No. This tool measures HTTP request/response timing only.

About

Measure response time for an endpoint with multiple requests. Free latency tester. See min/max/avg. No signup.

Related tools

Used together

Next step

After latency-checker, continue with Retry Simulator to validate the next API or webhook layer.