FreeUtil

WebSocket Tester

Connect to any WebSocket endpoint, send messages, and inspect real-time responses with timestamps.

Disconnected
Ctrl+Enter to send
Messages (0)
No messages yet. Connect and send one.
Detail
Select a message to view details.

What is a WebSocket?

WebSocket is a protocol that provides full-duplex communication channels over a single TCP connection. Unlike HTTP, where the client must initiate every request, WebSocket allows the server to push data to the client at any time — perfect for real-time applications like chat, live feeds, and games.

How to Use

  1. Enter a WebSocket URL (must start with wss:// or ws://).
  2. Click Connect to establish the connection.
  3. Type a message and click Send (or Ctrl+Enter).
  4. Incoming messages appear in the log in real time.
  5. Click any message to see the full payload with JSON formatting.