MQTT Topic Monitor

Connect to an MQTT WebSocket broker and view live topics and messages.

Hostname or IP address Port Protocol Controls

Disconnected

Unique topics: 0 Messages: 0

Topic	Latest message	Count	Last seen
Press Connect to start listening.

The page subscribes to # using username wildcard. On test.mosquitto.org this all-topic subscription is temporary and may be removed after about 20 seconds. Do not send private data to a public broker.