The “High” level can cope with a whopping 30 percent of damage or illegibility when the QR code is scanned. “Quite high” can cope with up to 25 percent of the code being damaged. “Low” allows the code to be successfully scanned if up to seven percent of the code is obscured or damaged. The different levels of error-correction can cope with different amounts of damage or illegibility when the QR code is scanned. The options we can use are “L” for low, “M” for medium, “Q” for quite high, and “H” for high or highest. -l H: This sets the level of error-correction.
The number you provide sets the size in pixels for the length of one side of a block. -s 6: This sets the size of the blocks in the QR checkered pattern.It can be used to pass any text-based information to the end user. The simplest form of QR code contains plain text. The parameters that affect the creation of the QR code decide such things as the size of the QR code, the color of the checkered pattern and the background, and the error-correction settings. One set relates to the creation and encoding of the QR codes, and the other specifies the data that we wish the QR code to contain. There are two distinct sets of parameters that we will need to pass to qrencode. On Manjaro we use pacman: sudo pacman -Sy qrencode To install qrencode on Fedora, use this command: sudo dnf install qrencode To install qrencode on Ubuntu, we type this: sudo apt-get install qrencode It also provides a command-line utility that we’re going to make use of. It provides a library that can be linked into your own programs to encapsulate the QR generation technology into your own applications. Qrencode is a versatile, fast, and richly-featured QR code generator.
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