Now here's a screenshot showing how to create a QR code of my Ask Ubuntu profile URL with both tools (and using eog on the right to view the image created by qrencode, as it has no preview). It also allows you to scan and decode QR codes from image files or a webcam. You can easily select the pixel size, margin and error correction level and save in the formats PNG and SVG. URL, email address, phone number, WiFi credentials or plain text. it can also be PNG for a file or ASCII as ascii format. The command you are looking for is the following: qrencode -t ansiutf8 < myfilehere The t option is to specify output type. It offers you a clean user interface that allows you to select an input data type like e.g. 26 Use the terminal application qrencode ( man page ). If you want a user-friendly GUI tool, you should try qtqr. The basic usage is qrencode -o "output-file.png" "Your text here". Install it with sudo apt install qrencode. There are also some more advanced options. If no input string is given as argument, it reads from standard input, so you can either type into the terminal or pipe another command's output into it. It takes an output file name and optionally an input string as command-line arguments and produces a PNG file with the QR code. If you want a simple command-line tool, I can recommend qrencode. Get more stuff like this in your inbox or you can always follow me on Twitter for the latest updates.I have tested two applications that worked well on Ubuntu 16.04 for creating QR codes:
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