QR Codes in Python: The Complete Developer Guide to Generation and Decoding
· 9 min read
Quick Response (QR) codes are two-dimensional matrix barcodes widely used for encoding URLs, text, contact information, and authentication tokens. Integrating QR code generation and decoding into Python applications is straightforward using robust libraries like qrcode, pyzbar, and Pillow.
This guide details how to generate basic QR codes, apply custom styles and colors, embed brand logos safely, output print-ready vector formats (SVG), host large files like PDFs via encoded links, and decode QR code images (including NumPy video streams).