How to Use the WebSocket Connection Tester
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1
Enter your WebSocket server URL (ws:// or wss://).
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2
Click Connect to open the connection.
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3
Type a JSON or text message and click Send.
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4
All incoming and outgoing messages appear in the live log.
Practical Example & Use Case
Common Real-World Scenario
Testing a local ws://localhost:3001 chat server during development.
Technical Notes & Limitations
Browser Engine Architecture
Browser security restricts connecting to non-WSS endpoints from HTTPS pages. Use ws:// endpoints on HTTP or localhost.
Frequently Asked Questions
Can I test secure wss:// endpoints?
Yes. WSS endpoints work from any origin. Plain WS endpoints work only from non-HTTPS pages or localhost.
Can I send custom JSON payloads?
Yes. Type any text or JSON string in the message box and click Send to transmit it to the server.