WebSocket Tester
Connect to any WebSocket server, send messages, and watch responses in real time. Everything runs in your browser — the connection goes straight from you to the server.
WebSocket URL
Protocols (optional)
DisconnectedSent: 0Received: 0
Tip: browsers can only open wss:// (secure) sockets from this HTTPS page; plain ws:// targets are blocked as mixed content except on localhost. The default wss://echo.websocket.events is a public echo server that returns whatever you send.
Frequently Asked Questions
Common questions about the WebSocket Tester.
What does the WebSocket tester do?
It connects to any WebSocket server you enter, lets you send messages, and shows the server's real-time responses with timestamps. It is ideal for debugging realtime apps and APIs.
Is my connection private?
Yes. The connection is made directly from your browser to the server you specify. Nothing is routed through or stored on our servers.
Why can't I connect to a ws:// address?
This page is served over HTTPS, and browsers block insecure ws:// connections from a secure page as mixed content. Use a secure wss:// URL instead (plain ws:// only works for localhost).
Is the WebSocket tester free?
Yes, it is completely free with no signup. You can open and close as many connections as you like.