WebSocket Message Formatter & Debugger

Professional WebSocket debugger for real-time applications. Inspect and format WebSocket messages in real-time, analyze frame performance, replay messages, and export detailed logs. Perfect for developers building chat applications, live notifications, collaborative tools, and real-time dashboards. Features live connection monitoring, message frame analysis, performance metrics, and comprehensive logging capabilities.

Live Connection Monitoring Frame Analysis Message Replay Performance Metrics Export Logs

Quick Examples

CHAT: {"type":"message","user":"john","text":"Hello"}
TRADING: {"event":"price_update","symbol":"AAPL","price":150.25}
NOTIFICATION: {"action":"notify","title":"New Order","priority":"high"}

Connection Settings

WebSocket URL

Always use wss:// for HTTPS pages. Use ws:// only on HTTP pages.

Custom Headers (JSON)

Optional: Add authentication or custom headers

Auto-reconnect on disconnect

Ready to connect...

Quick Test Servers

Sample Messages

Send Message

Message Content

Pretty Format

Validate JSON

Sent Messages (Last 10)

No messages sent yet

Live Message Feed

Waiting for messages...

Frame Analysis & Performance

0 B

Last Frame Size

0 KB

Total Data Transferred

Unknown

Last Message Type

0 ms

Avg Round-trip

Received

Sent

Export & Share

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What can I do with this WebSocket debugger?

This tool lets you connect to any WebSocket server, monitor live messages in real-time, inspect frame data, analyze performance metrics, replay messages, and export detailed logs. Perfect for debugging real-time applications like chat, notifications, and live dashboards.

How do I connect to a WebSocket server?

Enter your WebSocket URL (starting with ws:// or wss://) in the connection field, optionally add headers or authentication tokens, and click Connect. The tool establishes a live connection and automatically displays all incoming and outgoing messages with timestamps and frame analysis.

Can I send custom WebSocket messages?

Absolutely! The tool includes a message editor where you can compose JSON or text messages with syntax highlighting, validate them, and send them directly through your WebSocket connection. You can also replay previous messages or edit and resend them.

Does this work with all WebSocket implementations?

Yes, the tool works with any standard WebSocket server including Socket.IO, ws, and native WebSocket APIs. It supports both plain JSON and text messages. Browser security restrictions may apply for HTTPS pages connecting to WS (non-secure) servers.

Can I export and analyze message logs?

Yes, the tool provides comprehensive export options including JSON format with full message history, timestamps, frame sizes, and performance metrics. You can also filter messages by type, search by content, and generate performance reports.