Socket Inspector

Real-time WebSocket debugger, right inside DevTools.

Add to Chrome
Screenshot of Socket Inspector viewing and creating WebSocket messages in the browser DevTools

Create your own messages

Build your message and send it over any WebSocket connection on the page. Simulate edge cases, reproduce bugs, and uncover security vulnerabilities without leaving DevTools.

  • Send WebSocket messages to the UI or the server

  • Powerful editor with JSON and raw text support

  • Built-in JSON formatter and syntax validator

Socket Inspector’s text editor inside DevTools showing JSON editing with a built‑in formatter