QR Code Generator

QR codes (Quick Response codes) are two-dimensional barcodes that can store various types of data including URLs, plain text, contact information, and Wi-Fi credentials. Originally invented in 1994 by Denso Wave for tracking automotive parts, QR codes have become ubiquitous in everyday life, from restaurant menus and product packaging to event tickets and payment systems. Any smartphone camera can instantly scan and decode a QR code, making them one of the most accessible ways to share information.

This generator supports multiple data formats optimized for different use cases. URL QR codes direct scanners to a web page. Email codes use the mailto: protocol to open a pre-addressed email composition window. Phone codes use the tel: protocol to initiate a call. Wi-Fi QR codes encode the network name, password, and encryption type in a special format (WIFI:T:WPA;S:network;P:password;;) that allows smartphones to automatically connect to the network without manual entry.

For best results when using QR codes, ensure there is adequate contrast between the code and its background, and avoid making the code too small for reliable scanning. A general rule is that the QR code should be at least 2 cm x 2 cm for close-range scanning (such as on a business card) and proportionally larger for greater scanning distances. Always test your QR codes with multiple devices before printing or distributing them to ensure they scan correctly across different camera apps and operating systems.