The Universal Image to QR Code Bi-Directional Scanner & Branded Studio on RiazHub.com is a modern, 100% in-browser 2D symbology engine engineered for seamless dual-directional workflows.
In Mode 1 (Optical Scanner & Decoder), effortlessly decode payloads from uploaded photos, screenshots, and clipboard buffers (supporting JPG, PNG, WebP, AVIF, and TIFF) using hardware-accelerated BarcodeDetector technology with client-side binarization fallbacks, real-time contrast preprocessing, and smart classification for URLs, Wi-Fi credentials, vCards, and plain text.
In Mode 2 (Branded QR Studio & Synthesizer), design high-precision, scannable QR codes featuring embedded brand logos, custom scale (10%–30%), and protective margin shields with automatic center-crop aspect ratio preservation. Powered by Galois Field GF(2^8) mathematics, the generator automatically elevates error correction to Reed-Solomon Level H (30% fault tolerance), guaranteeing that central matrix modules can be masked by logos without data corruption. Customize module dots (Sharp Squares, Rounded Dots, Smooth Pills), corner finder locator eyes, brand hex colors, and linear gradients, then preview your assets on interactive Tabletop Display and Smartphone 3D mockups. Export razor-sharp Scalable Vector SVG files, lossless PNGs up to 2048px, or copy SVG markup and bitmap data directly to your clipboard with zero external server uploads and complete client-side privacy.
Universal Image to QR Code Studio
Optical QR Code decoder to extract payloads from photos, plus a high-precision branded QR code generator with central logo shielding, Reed-Solomon Level H fault tolerance, and vector SVG exports.
Drag & Drop QR photo here, or click to browse
Supports JPG, PNG, WEBP, AVIF, BMP, TIFF & Clipboard (Ctrl+V)Drop brand logo (PNG, SVG, JPG, WebP)
Preserves aspect ratio with automatic center-cropUpload or paste an image to scan
Optical boundary lines will highlight detected QR markers| QR Code Standard | ISO/IEC 18004 Symbology |
| Matrix Version | Version Auto-Calibrated |
| Grid Dimensions | 29 × 29 Modules |
| Reed-Solomon Level | Level H (30% Data Recovery) |
| Finder Pattern Size | 7×7 Modules (3 Corners) |
| Mask Evaluation | Pattern 3 (Minimum Penalty) |
| Payload Character Count | 21 Characters |
📖 QR Code Symbology Architecture & Reed-Solomon Guide
📐 2D Matrix & Finder Patterns
QR (Quick Response) codes are two-dimensional matrix barcodes defined by ISO/IEC 18004. The three distinct 7×7 module squares located in the top-left, top-right, and bottom-left corners serve as omnidirectional Finder Patterns, enabling mobile camera sensors to determine scale, angle, and orientation across 360 degrees instantly.
🛡️ Reed-Solomon Fault Tolerance
Through Galois Field $GF(2^8)$ polynomial mathematics, Reed-Solomon error correction embeds redundant codewords. Level H reserves up to 30% of codewords for restoration, which makes center-logo embedding possible: even when central data modules are shielded or occluded by artwork, the surrounding matrix mathematically recalculates the original payload with zero corruption.
👁️ Contrast & Scan Readability
Optical sensors rely on luminance contrast (ΔE) to detect light and dark modules. While custom brand hex codes and subtle gradients look gorgeous, maintaining strong luminance differential between foreground dots and background is paramount for low-light smartphone cameras and outdoor signage.
🔒 100% In-Browser Privacy Protection
Every computation—from optical BarcodeDetector binarization to Reed-Solomon polynomial division, canvas rendering, and vector SVG serialization—executes entirely within your local browser sandbox. Zero images, URLs, WiFi passwords, or logos are uploaded to any external server.