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Net Websocket Tester

Free tool — runs entirely in your browser.

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Real-Time WS & WSS Protocol Tester

WebSocket API Tester

Connect, send payloads, and inspect real-time WebSocket events.

Event Log Logbook
No WebSocket events logged yet. Connect to start testing.

Calculator Guide & Math

1What is a WebSocket Tester?

The WebSocket API Tester connects to live ws:// or wss:// endpoints, sends custom JSON/text payloads, and monitors event logs in real time directly from your browser.

2Step-by-Step Usage Guide

You built a real-time chat or crypto ticker WebSocket endpoint (e.g. wss://echo.websocket.org) and want to test message transmission.

  1. Enter WebSocket URL (e.g. wss://echo.websocket.org)
  2. Click "Connect" to establish WebSocket connection
  3. Type JSON payload in the message box and click "Send"
  4. Monitor real-time sent (> yellow) and received (< green) messages in the event logbook
Result Summary: Real-time WebSocket connection state and message logbook.

Frequently Asked Questions

WebSocket is a full-duplex communication protocol providing persistent, low-latency client-server channels over TCP.