ComfyUI Node: Qr Code (mtb)

Qr Code (mtb):

The Qr Code (mtb) node is designed to generate QR codes from a given URL, providing a simple and efficient way to create scannable codes for various applications. This node allows you to customize the size, error correction level, and appearance of the QR code, including options to invert the colors. It is particularly useful for embedding URLs in a visual format that can be easily scanned by mobile devices. Despite its capabilities, it is important to note that this node will soon be deprecated in favor of more advanced alternatives, such as the one available at https://github.com/coreyryanhanson/comfy-qr.

Qr Code (mtb) Input Parameters:

url

The URL parameter specifies the web address that the QR code will encode. This is the primary data that the QR code will contain. The default value is "https://www.github.com".

width

The width parameter determines the width of the generated QR code image in pixels. It allows you to control the size of the QR code to fit your specific needs. The default value is 256 pixels, with a minimum value of 0 and a maximum value of 8096 pixels.

height

The height parameter sets the height of the QR code image in pixels, similar to the width parameter. This ensures that the QR code can be scaled appropriately for different use cases. The default value is 256 pixels, with a minimum value of 0 and a maximum value of 8096 pixels.

error_correct

The error_correct parameter defines the error correction level of the QR code, which determines how much of the code can be damaged or obscured while still being readable. The available options are "L" (low), "M" (medium), "Q" (quartile), and "H" (high), with "L" being the default. Higher levels of error correction increase the robustness of the QR code but also make it more complex.

box_size

The box_size parameter specifies the size of each individual box (or module) in the QR code, in pixels. This affects the overall resolution and clarity of the QR code. The default value is 10 pixels, with a minimum value of 0 and a maximum value of 8096 pixels.

border

The border parameter sets the width of the border around the QR code, in boxes. This helps to ensure that the QR code is easily scannable by providing a clear margin around it. The default value is 4 boxes, with a minimum value of 0 and a maximum value of 8096 boxes.

invert

The invert parameter is a boolean option that, when set to true, inverts the colors of the QR code. This means the QR code will have a white foreground and a black background, instead of the default black foreground and white background. The default value is false.

Qr Code (mtb) Output Parameters:

IMAGE

The output parameter is an image of the generated QR code. This image can be used in various applications, such as embedding in documents, websites, or printed materials. The QR code image is generated based on the input parameters and is returned in a format that can be easily utilized in your projects.

Qr Code (mtb) Usage Tips:

• To ensure the QR code is easily scannable, use a higher error correction level if the code will be printed on materials that might get damaged or obscured.
• Adjust the box_size and border parameters to achieve the desired resolution and clarity for your specific use case.
• Use the invert option if you need a QR code with a white foreground and black background, which can be useful for certain design requirements.

Qr Code (mtb) Common Errors and Solutions:

Invalid error correction level

• Explanation: The error_correct parameter must be one of the following values: "L", "M", "Q", or "H".
• Solution: Ensure that the error_correct parameter is set to one of the valid options.

Image size out of bounds

• Explanation: The width and height parameters must be within the range of 0 to 8096 pixels.
• Solution: Adjust the width and height parameters to be within the valid range.

Box size or border out of bounds

• Explanation: The box_size and border parameters must be within the range of 0 to 8096.
• Solution: Ensure that the box_size and border parameters are set to values within the valid range.