WebSocket Tester, Free Online WebSocket Client

Protocol: Choose the correct prefix: ws:// (unencrypted) or wss:// (encrypted SSL).
Connection: Ensure the status is "Connected" before sending messages.
Auth: Custom Headers are not supported. Try passing tokens via URL query parameters.
Format: This tool sends text messages. If sending JSON, ensure valid syntax.
Keep-alive: To prevent timeouts, manually send empty messages periodically to keep the connection alive.
Debugging: Use browser DevTools (F12) -> Network -> WS tab to inspect handshake failures and close codes.
History: Click the address input to access recently used server addresses.