QR Code Studio

Create, read and manage QR Codes with history, logo, colors and type detection. Works 100% offline.

QR Code Studio is a complete toolkit for creating, reading, and managing QR codes — entirely in your browser. No servers, no accounts, no telemetry. The extension is self-contained: encoding and decoding happen locally with bundled libraries (qrcode.js, jsQR). CREATE QR CODES FOR ANYTHING • URL / website • E-mail (subject + body) • Phone call • SMS message • Wi-Fi credentials (WPA/WEP/open, hidden networks supported) • Contact card (vCard 3.0) • Geographic coordinates • Calendar event (iCalendar) • Free text and HTML • WhatsApp conversation • Telegram profile / chat • Social media profiles • PayPal.me payment • Cryptocurrency payment (BIP21) CUSTOMIZATION • Foreground and background colors with optional transparency • Logo overlay (PNG/JPG) with size and shape control (square / rounded / circle) • Visual style: square modules or dots • Error correction levels (L / M / Q / H) — automatic H when a logo is used • Configurable export resolution for sharper PNG and PDF downloads • Multiple sizes for the live preview READ QR CODES • Drop an image to decode • Select a region of any visible web page (the extension overlays a draggable rectangle) • Use your camera (works fully offline; the video stream stays on your device) LOCAL HISTORY • Created and read items kept side by side • Capped at 50 items per section by default, fully configurable • Clear created or clear all from a single click EXPORT • PNG (raster), SVG (vector), and PDF • Copy the QR image directly to the clipboard PRIVACY FIRST QR Code Studio works 100% offline. We never collect, transmit, or sell your data. There are no accounts, no analytics, no advertising libraries. Your QR content, history, settings, and uploaded logo all live in your browser's local storage. The full privacy policy is bundled inside the extension and also available as a public link.