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QR Code Scanner & Generator (QR-SnG)

A high-performance, professional-grade browser extension designed for seamless QR code creation and extraction. Built with a focus on modern UI/UX, privacy, and the ability to handle complex web elements like Canvas and SVG-based QR codes that traditional scanners fail to recognize.

Overview

QR-SnG is more than a simple barcode reader; it is a comprehensive toolkit for managing digital data. Whether you need to generate a high-quality vector QR code for a business card or extract data from a stubborn CSS-styled QR code on a webpage, this extension provides a robust, Manifest V3-compliant solution.



Key Features

🔍 Advanced Scanning Capabilities

• jsQR Integration: Utilizes the synchronous jsQR engine for 100% Manifest V3 CSP compliance. No external web workers are required, ensuring maximum security and performance.
• Multi-Input Support: Scan QR codes via file upload, standard right-click context menus, or by simply dragging and dropping an image file anywhere into the side panel.
• Smart Parser: Automatically detects the data type of scanned codes (Wi-Fi, vCard, URL, etc.) and presents a formatted, interactive UI rather than raw text.

🎨 Professional QR Generatio

• Smart Templates: Dedicated forms for generating specialized QR codes:
• Wi-Fi: SSID, Password, and Encryption type.
• vCard: Full contact details (Name, Phone, Email).
• Communication: Email (Subject/Body) and SMS/WhatsApp integration.
• Geolocation: Latitude/Longitude with a built-in City Search (OpenStreetMap API) to auto-fill coordinates.
• Deep Customization:
• Shape Control: Customize "Data Dots" and "Position Eyes" independently (Squares, Circles, Rounded, or Liquid styles).
• Visual Aesthetics: Support for solid colors, linear gradients, and transparent backgrounds.
• Contrast Validator: Real-time scannability check that warns you if your color choices provide insufficient contrast for physical scanners.
• Large Text Hosting: A unique feature that handles massive text payloads by hosting the content on a secure web viewer and generating a lightweight, scannable "Compressed Link" QR code instead.

📂 History & Management

• Intelligent History Log: Saves your recent scans and generations locally.
• Favorites & Recycle Bin: Organize your codes with a "Starred" system. Deleted items move to a Recycle Bin with a 30-day auto-purge cycle, similar to modern OS behavior.
• Smart File Naming: Automatically names downloaded files based on their content (e.g., QR-SnG_github.com-my-project.png), truncated to 50 characters for easy recognition.

Advanced Technology

URL Shortening & Fallback

The extension integrates the TinyURL API to ensure that long, complex URLs result in simple, high-density QR codes that are easier for mobile devices to scan. It features a dual-API fallback system to ensure the service remains available even if a specific API key reaches its limit.

Privacy & Performance

• No Camera Required: Unlike legacy scanners, this tool requires zero camera permissions, making it ideal for PCs and privacy-conscious users.
• Dark Mode: A fully native Dark Mode toggle that respects user preferences and reduces eye strain.
• Local Processing: All QR decoding and matrix generation happen locally on your machine; your data is never sent to a third-party server for processing (except optional URL shortening).