QR Code Generator

A QR code (Quick Response code) is a two-dimensional barcode that can be scanned by smartphone cameras and dedicated readers to instantly access the encoded information. Originally invented in 1994 for tracking automotive parts, QR codes are now everywhere — restaurant menus, business cards, event tickets, product packaging, and marketing materials. They bridge the gap between physical media and digital content by giving people a fast way to open a URL, save contact information, or connect to a WiFi network without typing anything.

The most common use cases for QR codes include linking to websites and landing pages, sharing contact details in vCard format, encoding WiFi network credentials (SSID and password) so guests can connect with a single scan, and adding scannable links to printed materials like flyers, posters, and business cards. For developers, QR codes are useful for sharing deep links to mobile apps, encoding configuration strings, and creating quick access to staging or demo environments.

This generator offers three size options to fit different use cases. 128px is compact enough to embed in documents, emails, or slide decks without taking up much space. 256px is the most versatile size, working well both on screen and in small-to-medium print formats. 512px is designed for large-format printing like posters, banners, and signage where the code needs to be scannable from a distance. The QR code is generated entirely in your browser using an open-source library — no server is involved, and the output has no watermarks or branding.