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What is QR Code?
Quick Response code is a two-dimensional barcode that stores data in a grid of black and white modules. Phones scan it to open URLs, connect to Wi-Fi, or share contact details.
Related tools
Try these DevStackIO tools for QR Code:
QR Code GeneratorCreate QR codes for URLs, Wi-Fi, vCards and text. Adjust size and error correction, download PNG/SVG.Open tool →WiFi QR Code GeneratorGenerate QR for WiFi join (SSID/auth/password). Use for WiFi sharing only; for URLs/text use qr-generator. Input: SSID + security + password. Returns QR PNG/SVG. 100% client-side.Open tool →
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About this glossary
Definitions are written in plain language and sourced from MDN Web Docs, W3C specifications, and RFCs. Related tools run 100% in your browser — no data leaves your device.
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