WebSocket Tester
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About this tool
WebSocket Tester opens a live WebSocket connection right in your browser — no server involved. Connect to any ws:// or wss:// endpoint, send text messages, and watch incoming messages stream in with timestamps.
Features: connection status, sent/received counters, optional subprotocols, repeated (heartbeat) sending at a custom interval, and a clearable message log.
Common uses: debugging realtime backends, testing chat/push services, inspecting message formats.
Frequently asked questions
What can I do with this tool?
Connect to any ws:// or wss:// endpoint, send messages, and watch incoming, outgoing and system events in a live log.
Why can't I connect to a ws:// server?
Browsers block insecure ws:// connections from an https:// page. Use a wss:// endpoint, or open the tool over http for local testing.
Does it support subprotocols and timed sending?
Yes, you can specify subprotocols on connect and send a message repeatedly on an interval for testing.