Free Online WebSocket Tester tool icon
WebSocket · Tester

Free Online WebSocket Tester

Browser-based WebSocket testing tool to connect to ws/wss endpoints, send and receive messages, and inspect detailed logs and connection status for real-time APIs.

Connection

Enter a WebSocket URL (ws:// or wss://), optionally specify subprotocols, then click “Connect” to open a connection. Type messages in the payload box and click “Send” to see full send/receive logs.

Disconnected
Send message
Logs

Tip: browsers enforce origin and TLS rules. If the server does not accept your origin or has TLS issues, the WebSocket may fail to open or close immediately.