How We Built Size.link - Shopify

This post details the development of Size.link, a web-based tool for visualizing product dimensions in Augmented Reality. It covers the technical challenges of supporting AR on both iOS (AR Quick Look) and Android (Scene Viewer) using different 3D file formats (.usdz and .glTF). The core innovation lies in dynamically modifying the binary data of pre-generated .usdz files to adjust scale and vertex positions on the fly, bypassing slow conversion tools and enabling client-side or server-side generation of AR experiences. It also touches on material customization for visual appeal.