Network Test

A free reachability check for browsers. Confirms this workstation can resolve DNS, reach public HTTPS endpoints, and open a WebSocket. Useful for isolating whether a "page won't load" ticket is local firewall, internet outage, or an app-specific issue. Not a speedtest.

Read the Network Test guide for help interpreting the verdict.

Privacy: This tool sends a small no-cors GET to a fixed list of public endpoints (Cloudflare, Google, Microsoft, Cloudflare DNS, public WebSocket echo). The targets see only that some browser pinged them - no credentials, no business data, no telemetry to us. View source to confirm the target list. No analytics, no tracking.

Configuration

Driver: Browser fetch + WebSocket APIs

Takes about 20 seconds. The test issues no-cors pings to public CDNs and a single WebSocket echo; no business data is sent.

Status Check Step

Pending

Browser reports network connectivity

Reads navigator.onLine and navigator.connection for an effective-type estimate.

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Pending

DNS and HTTPS are reachable

Issues no-cors pings to five public CDNs and DNS endpoints in parallel.

2 of 3

Pending

WebSocket connectivity is allowed

Opens a single WebSocket to a public echo server and measures round-trip time.

3 of 3