This tool generates QR codes in the terminal. It supports numeric, alphanumeric, and byte encoding modes for all QR versions (1 through 40). QR codes can be generated from a positional argument, a file, or standard input.
git clone https://github.com/samlangborgh/qr-generator.git
cd qr-generator
make| Argument | Description |
|---|---|
| message | Message used to create QR code (optional) |
| Option | Description |
|---|---|
| -L | Set error correction level to low (7% of data bytes can be restored) |
| -M | Set error correction level to medium (15% of data bytes can be restored) |
| -Q | Set error correction level to quartile (25% of data bytes can be restored) |
| -H | Set error correction level to high (30% of data bytes can be restored) |
| -i, --invert | Invert the colors of the QR code |
| -f, --file=FILE | Create QR from file (optional) |
| -v, --verbose | Print verbose output |
| --help | Display the help message |
- If no message argument or file is provided, the program reads from standard input.
- The default error correction level is medium.
./qr -L "The quick brown fox jumps over the lazy dog."
./qr https://github.com/samlangborgh/qr-generator
./qr --file ~/.ssh/id_rsa.pub
./qr -H < myfile.txt
ls | ./qrI relied on the following resources while working on this project. I highly recommend checking them out if you are interested in understanding how QR codes work.