{ }
JSON Explorer
Explore nested JSON, find a field and generate Node-RED Function code.
Open tool →FREE IIoT / NODE-RED TOOLS
Build Node-RED flows
faster.
Practical browser-based tools for JSON payloads, MQTT, REST APIs and Modbus TCP. Generate Node-RED code and importable flow JSON without a backend.
Explore tools✓ No login ✓ No backend ✓ Browser-based
{
"type": "mqtt in",
"topic": "sensors/pump01"
}MQTT → JSON → Function → Debug Generate
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FREE TOOLS
Practical Node-RED builders
Generate snippets and importable flow JSON for common IIoT development tasks.
MQ
MQTT → Node-RED
Configure a broker, topic and processing function and generate a flow.
Open tool →API
REST API → Node-RED
Build an HTTP Request flow with method, URL, auth and response processing.
Open tool →MB
Modbus TCP → Node-RED
Generate a starter Modbus Read flow for registers and devices.
Open tool →JSON → NODE-RED
JSON Explorer
Paste JSON, click a leaf value and generate a Node-RED Function.
Paste JSON
Ready
Select value 0 fields
Paste JSON and click Explore.
Node-RED output
Path
—Select a value.
—
The downloaded flow includes your pasted JSON in an Inject node, then extracts the selected value and sends it to Debug.
MQTT → NODE-RED
MQTT Flow Builder
Create an MQTT In → JSON → Function → Debug starter flow with the actual broker settings included.
Click Generate Node-RED flow.
REST API → NODE-RED
REST API Flow Builder
Generate an Inject → HTTP Request → Function → Debug flow.
Click Generate Node-RED flow.
MODBUS TCP → NODE-RED
Modbus TCP Flow Builder
Generate a starter Modbus Read flow. The flow uses the node-red-contrib-modbus node type.
Click Generate Node-RED flow.
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LEARN
Node-RED & IIoT guides
Practical explanations connected directly to the tools.
How to extract a JSON value in Node-RED
Understand msg.payload and nested field access.
Read guide →How MQTT JSON payloads work in Node-RED
Follow the MQTT → JSON → Function pattern.
Read guide →Calling REST APIs from Node-RED
Understand HTTP Request nodes, methods and responses.
Read guide →Built for practical IIoT development
IIoT systems often combine sensor payloads, MQTT brokers, REST APIs, industrial protocols and automation logic. These tools are designed to help developers and technicians prototype those integrations faster.