Why can't I scan the generated QR code when I use the QR code generator?

1. The color design of QR code is unreasonable.

Many times we design some unreasonable overall colors for the beauty of QR codes. For all two-dimensional code scanners, it is hoped that the recognition part will form a certain color difference with the background color, so that the code can be better recognized.

Moreover, the color of the code part must be dark to be recognized, so if you set the code color to white, you may not recognize the QR code, which is why ordinary QR codes are all black, just to facilitate better recognition of the QR code.

2. The color of the QR code should have enough contrast.

When choosing a background color other than black and white, make sure there is enough contrast. Choosing a color QR code will make your QR code stand out, but only if the color has a certain contrast. If you have too many similar colors, it will be difficult for the scanner to scan the QR code when it is slightly shiny.

3. Fuzzy QR code

The QR code you generate must have sufficient resolution to keep it clear after enlarging the size. If the resolution is not enough, large-size pictures will become very blurred. And once blurred, it is likely that it will not be scanned.

4. The QR code is too small

Sometimes the QR code is too small to be scanned. Because the quality of mobile phones is different, some mobile phones have poor scanning function, so this factor should be taken into account when printing QR codes, and the QR codes should be printed large enough, at least 2x2 cm. And the size of the QR code should be reasonably selected in specific use cases.

5. Don't put too much content in the QR code.

The more content is put in the QR code, the more pixels are generated. When there is too much content, the QR code will become dense and difficult to identify.

Reply time: 202 1-08-05. Please refer to the latest business changes announced by Ping An Bank in official website.

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