Dithered QR Codes: How Engineers Embedded Algorithmic Art into Standard Scannable Codes

Creative technologist Andrew T. has published a viral breakdown demonstrating **Dithered QR Codes**—a technique that uses error-correction math and Floyd-Steinberg dithering algorithms to turn ugly matrix barcodes into visually stunning halftoned artwork. While custom QR codes usually rely on centered logo overlays, dithered codes modify every individual data module across the grid. By leveraging the high fault tolerance built into Reed-Solomon error correction codes, the algorithm balances image luminance against valid barcode parity bits, ensuring that standard smartphone camera apps decode the URL instantly despite dramatic visual alterations.