Everything you need to know about testing WebSocket connections
Click New Connection in the left sidebar, enter a name and WebSocket URL (starts with ws:// or wss://).
Select your connection from the list, then click Connect in the center panel.
Type your message in the input area and click Send or press ⌘↵.
Save up to 5 connections for quick access. Saved connections persist in your browser.
Name: Any descriptive name for your connection
URL: Must start with ws:// (insecure) or wss:// (secure)
Use this free public echo server to test:
wss://echo.websocket.orgSave frequently used messages as templates. Store up to 10 templates.
Click Use Template on any saved template to load it into the message input. You can edit it before sending.
All sent and received messages appear in the center panel with:
Note: Message history is limited to the last 100 messages and is cleared when you close the browser.
Not connected to any server. Select a connection and click Connect.
Attempting to establish connection. Connection timeout is 10 seconds.
Successfully connected. You can now send and receive messages.
Connection failed. Check your URL and network, then try again.
All data is stored locally in your browser using localStorage. Nothing is sent to external servers.
Important: Clearing your browser data will delete all saved connections and templates.
Server took too long to respond. Check the URL is correct and the server is running.
Unable to connect. Verify the WebSocket URL format (ws:// or wss://) and check your network connection.
Maximum 5 connections allowed. Delete an existing connection to add a new one.
Maximum 10 templates allowed. Delete an existing template to add a new one.
Need more help? Report an issue