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WebSocket Tester — Online Debug Panel

Connect to ws:// or wss:// endpoints from your browser, send text frames, and review session logs. Useful for backend WebSocket handshake and message debugging without a throwaway client.

Quick switch→SSE Tester
WebSocketDebugNetwork
Quick switch:SSE TestercURL to Code

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Use cases

  • Verify a server WebSocket handshake succeeds
  • Debug push and reply message formats
  • Check basic connectivity before chasing WSS certificate issues

How to use

  1. Enter a ws:// or wss:// URL and connect
  2. Send text frames from the input box
  3. Use the log to confirm send and receive behavior

Example input and output

URL

wss://example.com/ws

Action

Connect → send ping

FAQ

Does traffic pass through a third-party relay?

No. The browser connects directly to the target endpoint.

What if the connection is blocked?

Browser security, CORS, and server auth still apply. The service must allow your origin and protocol.

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