QRCode-Kotlin/qrcode/QRCodeBuilder/withInformationDensity

withInformationDensity

fun withInformationDensity(minTypeNum: Int): QRCodeBuilder(source)

The level of "information density" this QRCode will maintain. Defaults to 6.

This is complex to explain, but basically the lower this value the fewer squares the QR Code might have.

This is simply a way to make sure QR Codes for very few characters are readable :)

IMPORTANT: Setting this also sets forceInformationDensity to true! By default, the code will compute a value automatically given the data to be encoded and the Error Correction Level. We take that if you are setting this manually, you probably know what you're doing.

In short:

  • Lots of data: You can keep this as close to 1 as possible. Be aware that the QRCode might be a bit hard to read if this is too low.

  • Smaller data: Try to keep this a big higher, just in case.

See also