WebSocket Tester

WebSocket is a communication protocol that provides full-duplex channels over a single TCP connection. Unlike HTTP, which is request-response based, WebSocket allows the server and client to send messages to each other at any time after the connection is established.

Using This Tool

• Connect: Enter a WebSocket URL (ws:// or wss://) and click Connect to establish a connection
• Send Messages: Type a message in the text area and click Send or press Ctrl+Enter
• Receive Messages: Incoming messages appear in the log with a green arrow. Sent messages show a blue arrow
• Heartbeat: Enable heartbeat to send periodic keep-alive messages, preventing idle connection timeouts

URL Schemes

• ws:// — Unencrypted WebSocket connection (port 80 by default)
• wss:// — TLS-encrypted WebSocket connection (port 443 by default), recommended for production

Common Use Cases

• Testing and debugging WebSocket server endpoints
• Verifying message formats and protocol behavior
• Monitoring real-time data streams (stock tickers, chat, notifications)
• Checking keep-alive and reconnection behavior

Tips

• Use echo servers (like wss://echo.websocket.org) to verify that your messages are sent and received correctly
• Enable heartbeat for long-lived connections that may be dropped by proxies or firewalls
• JSON messages are displayed with syntax highlighting for easier reading
• All communication happens directly from your browser — no data passes through our servers