QR code online generator

Online QR code generator provides free online QR code generation service, which can generate corresponding QR code images from electronic business cards, texts, emails, SMS, phone numbers, website addresses and other information.

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Error Resistance

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Alpha

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Alpha

FAQs

What is QR Code Error Resistance

Error resistance is also called error correction rate, which means that the QR code can still be scanned normally after being blocked, and the maximum area that can be blocked is the error resistance. The higher the error tolerance, the larger the part of the QR code image that can be blocked.

Error correction principle

The QR code has redundancy during the encoding process, just like 123 is encoded into 123123, so as long as a part of the QR code image is scanned, the QR code content can still be read completely.

Error correction ability level

The error correction rate of the QR code is represented by letters, and the error correction ability level is divided into: L (7%), M (15%), Q (25%), H (30%) four levels;

How to choose error correction rate

For the current mainstream mobile phones, in most scanning scenarios, the higher the error tolerance, the easier it is to be scanned quickly.
Of course, the cost of high error tolerance is that the complexity of the picture increases. In actual operation, you can choose the corresponding error tolerance level according to your needs.
Note that the three positioning frames on the edge of the QR code and the small positioning block in the middle cannot be blocked. Otherwise, no matter how high the error tolerance is, it cannot be scanned.