QR Code Generator

Quick Response (QR) codes are two-dimensional matrix barcodes originally invented in 1994 by the Japanese automotive corporation Denso Wave. Unlike legacy linear one-dimensional barcodes that hold modest amounts of numerical data, QR codes encode substantial amounts of alphanumeric, binary, and kanji information across both vertical and horizontal planes. Today, QR codes are ubiquitous across contactless restaurant menus, physical product packaging, Wi-Fi onboarding, digital payments, and event ticketing. **Error Correction Capability:** A defining characteristic of QR codes is the Reed-Solomon error correction algorithm embedded directly into their matrix pattern. This mathematical fault tolerance enables a scanner to reconstruct encoded information even if a portion of the QR code is damaged, dirty, or obscured: - **Level L (Low):** Reconstructs up to 7% of damaged or missing data. - **Level M (Medium - Default):** Reconstructs up to 15% of corrupted data. Best overall balance for standard web links. - **Level Q (Quartile):** Reconstructs up to 25% of obscured data. - **Level H (High):** Reconstructs up to 30% of lost data. Ideal for high-wear outdoor posters or codes with centered logos. **Automated Wi-Fi Credentials Formatting:** Connecting guests to secure Wi-Fi networks manually involves tedious password entry. Our tool encodes Wi-Fi strings adhering to standard industry schemas (`WIFI:T:WPA;S:MyNetwork;P:MyPassword;;`), escaping sensitive punctuation delimiters (`\ ; , : "`) properly so iOS and Android cameras connect instantly upon scanning. All rendering is performed locally using standard HTML Canvas and SVG vector math. Your private Wi-Fi passwords, contact cards, and URLs are never sent over the web.