Error Correction is a property of QR Codes that helps them remain scannable despite damage or dirt. It also enables the restoration of the data even after there is distortion, dirt, or damage. Hence, a QR Code keeps functioning even when a part of it is removed, damaged, or even obscured with a finger.
Use this guide to learn in detail about Error Correction in a QR Code created using the Scanova QR Code Generator tool:
Error Correction works by adding backup data to the QR Code mathematically. There are four levels of error correction:
- Level L: has up to 7% error correction capability
- Level M: has up to 15% error correction capability
- Level Q: has up to 25% error correction capability
- Level H: has up to 30% error correction capability
Error correction also enables the restoration of the data even after there is distortion, dirt, or damage. Hence, a QR Code keeps functioning even when a part of it is removed, damaged, or even obscured with a finger.
The higher the level of Error Correction, the greater will be the scannability and density of the QR Code.
If you're expecting your printed QR Code to undergo wear-and-tear, ensure that that Error Correction Level is set to Q or H.
Error correction is set automatically for the QR Code which includes a logo in the design to ensure scannability. If you wish to manually set error correction, it is required to remove the logo.
To know how to set the Error Correction of your QR Codes, please follow the steps shown in the demo
If you still have questions related to this topic, feel free to reach out to our customer relations team at email@example.com.