QRispy

A GUI interface that uses qrcode and pyzbar libraries to encode/decode QR codes in Python.

Usage

QRispy can be used as either with a GUI or in CLI

Requirements

Python 3.9 or later
The qrcodes, pyzbar and pillow packages

GUI

Currently, generating and decoding QR codes is supported in the GUI version. You can either enter some text directly into the entry box or select a plaintext file to read text from. The generated QR code is saved automatically as 'output.png'. QR codes can be decoded from images or screenshots where clearly visible and on a light background, although this hasn't been tested with camera photos. The decoded contents are displayed and saved to 'output.txt'.

Terminal

The qr_codec library can be run directly with the following parameters:
qr_codec.py <encode/decode> <input_data>

For encode, input_data would be a string and outputs QR code to output.png.
For decode, input_data would be path to an image file containing QR code to read.

Examples

Encoding a string to QR code

This QR code contains the word 'Test'. QR codes are automatically scaled relative to the length of bytes.

Decoding a QR code

Calling decode_qr_code() on the image path returns a list object containing the QR code data (in bytes) and metadata. By calling the data.decode() method we can encode it with UTF-8 or ASCII.

Todo

Write first-time setup script for installing dependencies
Implement style options for QR code supported by the qrcode library
Add format options for saving (.PNG or .SVG)

Known bugs

qrcode.exceptions.DataOverflowError thrown when a text file with too many characters is selected.

corndogit/QRispy