From Generation to Parsing, to Data Transmission: The n8n QR Code Node Package Boosts Workflow Efficiency

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https://www.npmjs.com/package/n8n-nodes-qrcode-hundred98

Core Nodes Introduction

  1. QR Code Generator

With simple configurations, it can convert text or JSON data into QR codes. It supports custom output formats (PNG, JPG, SVG), sizes (32-2048 pixels), and error correction levels (four options: L/M/Q/H, corresponding to 7%-30% error tolerance). The generated result returns a JSON object containing QR code data and corresponding binary image data, facilitating subsequent workflow calls.

(Future updates will include advanced features like color customization, margin adjustment, and logo embedding)

  1. QR Code Reader

It can read and parse QR code content from binary image fields or online image URLs. The output includes parsing status — returning a data field on success and error information on failure, enabling flexible handling of QR code recognition results.

(Future updates will support batch processing of multiple QR codes and automatic content type identification)

  1. QR Code Data Bridge

Specialized in transmitting arbitrary data via QR codes, it’s ideal for data exchange scenarios requiring security verification. When in use, simply match the node’s qrKey with the qrKey contained in the QR code to retrieve custom key-value pair data (such as personal information, configuration parameters, etc.) from the QR code, adding an extra security layer to data transmission.

Practical Use Cases

This node package has a wide range of applications, such as:

  • Secure API Key Distribution: Administrators generate QR codes containing API keys, and developers retrieve them after verifying the qrKey via the Data Bridge node to prevent unauthorized access.

  • Rapid Employee Information Entry: HR generates QR codes with employee details, and the IT department scans them to automatically populate system data.

  • Device Configuration Deployment: Operations teams create QR codes with network configurations, allowing on-site personnel to scan and apply parameters to devices.

  • Meeting Information Sharing: Administrative staff generate QR codes with meeting details, enabling participants to view the full agenda by scanning.

Project Repository

GitHub: https://github.com/hundred98/n8n-qrcode-node

If you have any questions, feel free to contact the author through the method provided in the documentation.

Hope this tool helps you! Welcome to share more use cases and improvement suggestions.

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is there any way to track qr scans/opens?

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The main functions of this node are: identifying QR codes, verifying qrKey, and extracting data.

Tracking the process of QR code openings or scans requires the addition of other nodes for implementation.

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Explain in detail how to use this node

1. The data of the QR code image contains an Attribute–Value Pair: ‘qrKey’:‘xxxxxxxxxxxxxxxx’

2. There is also a qrKey that users need to fill in within this QR Code Data Bridge

3. The qrKey value filled in by the user must match the qrKey of the QR code for this node to output other Attribute–Value Pair data of the QR code image.


[
    {
    "success": true,
    "format": "json",
        "data": {
            "appName": "My Test App",
            "secretName": "API Key",
            "secretValue": "sk-1234567890abcdef",
            "myName": "tianya",
            "myAge": "88"
        }
    }
]

4. If they do not match, the output will be:

{
    "success": false,
    "error": "qrKey verification failed"
}

5. Additional processing logic can be added after this node

840×284 26.7 KB

For example: The If node checks whether the success output by the QR Code Data Bridge is true. If it is true, it inserts the data into the Data Table; otherwise, it does nothing. Then, a Code node checks success and outputs the result, and then returns the data via Webhook.