I Built a Sprite Sheet Tool That Runs Entirely in the Browser (No Uploads, No Backend)

A developer built a fully client-side, browser-based sprite toolchain that handles the entire sprite workflow—video/GIF to sprite sheet conversion, texture atlas packing (MaxRects, Shelf, Grid), duplicate detection, normal map generation, and GIF/video compression—without any backend or file uploads. The stack leverages FFmpeg.wasm for video/GIF decoding, HTML5 Canvas for frame extraction and atlas rendering, and includes optimization features like power-of-two sizing, padding, extrusion, and PNG quantization.