This CLI utility can be used to generate QR code image files from text. It is built on top of the very nice Python module `qrcode`.
If, for example, you’d like to generate a QR code for the URL “https://mader.xyz”, you could use this utility in the following way:
./qr-code-from-url https://mader.xyz
The resulting image file will then be saved to the `./out` directory.