Lego Art Case # 1: Transforming Photos into LEGO-Inspired Mosaic Art

Lego Art is a browser-based creative platform built for LEGO art enthusiasts who want to design, convert, and customize brick-style artwork digitally. The app offers a freehand drawing canvas with a LEGO-style grid, an image-to-LEGO converter that maps any uploaded photo to the closest LEGO palette colors, and a post-conversion editing layer so users can fine-tune results brick by brick. Built with the HTML5 Canvas API for performance and client-side image processing to keep things fast and private, it is a tight, well-scoped tool that prioritizes a playful creative experience over feature bloat. The case study covers the problem it solved, the technical decisions behind the canvas and color quantization pipeline, and the key learnings around canvas performance optimization.