WebSocket Tester
Test and debug WebSocket connections with real-time message viewing.
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🔒 Privacy Notice: All WebSocket connections are direct between your browser and the server. No data passes through our servers.
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How to Use the WebSocket Tester
Our free WebSocket tester helps developers test and debug real-time WebSocket connections directly in the browser. Whether you're building a chat application, implementing live notifications, developing a multiplayer game, or working with streaming data APIs, this tool provides a simple interface to connect to any WebSocket server and verify message exchange.
To test a WebSocket connection, enter your server URL in the connection field. Use ws:// for unencrypted local development (like ws://localhost:3000/socket) or wss:// for secure production servers (like wss://api.example.com/ws). Click the Connect button to establish the connection. The connection status indicator shows whether you're connected, connecting, or disconnected, with color-coded visual feedback.
Once connected, you can send messages to your server using the message input area. Type your message and click Send or press Enter. The tool supports plain text and JSON messages — just type valid JSON and it will be sent as a string for your server to parse. All messages appear in the message log with timestamps, showing both messages you send (outgoing) and messages received from the server (incoming).
The message log displays each message with its direction, timestamp, and content. Incoming messages from your server appear with a green indicator, while outgoing messages you send show with a blue indicator. This makes it easy to trace request-response patterns and debug protocol implementations. You can clear the log at any time to start fresh, or copy message content for documentation or debugging.
The tool also shows connection events like successful connections, disconnections, and errors. If your connection fails, error messages help diagnose issues like incorrect URLs, server unavailability, or CORS problems. All WebSocket communication happens directly between your browser and the server — no proxy, no data storage, completely private and secure. Perfect for API development, integration testing, and real-time feature debugging.
Frequently Asked Questions
What is a WebSocket connection?
WebSocket is a protocol that provides full-duplex communication channels over a single TCP connection. Unlike HTTP requests that are one-way, WebSocket allows both client and server to send messages to each other at any time after the initial handshake. This makes it perfect for real-time applications like chat, live updates, gaming, and collaborative tools.
What's the difference between ws:// and wss://?
ws:// is the unencrypted WebSocket protocol (like HTTP), while wss:// is the secure, encrypted version (like HTTPS). Always use wss:// in production to protect data transmission. Most modern browsers require wss:// when connecting from HTTPS pages. Our tool supports both protocols for testing.
How do I test my WebSocket server?
Enter your WebSocket server URL (ws://localhost:8080 or wss://your-domain.com/socket) and click Connect. Once connected, type messages in the input area and click Send. The tool displays all incoming and outgoing messages with timestamps, making it easy to verify your server responds correctly to different commands.
Can I send JSON messages?
Yes! The tool sends text messages by default. If you want to send JSON, simply type valid JSON in the message input (like {"type":"subscribe","channel":"updates"}). The tool will send it as a string, and your server can parse it as JSON. You can also view incoming JSON messages formatted for readability.
Is my WebSocket data stored?
No. All WebSocket connections are established directly between your browser and the server you specify. No data passes through our servers. Messages are only stored locally in your browser's memory and are cleared when you refresh the page. The tool is completely private.