Seamless — Instagram Carousel Editor

Fully client-side editor for seamless Instagram carousels — posts where one image spans multiple slides. Models the carousel as one wide strip so layouts place photos across slide edges. Seeded generation (reproducible + shuffle), Figma-style drag/resize/snap/pan-zoom, per-post locks, live DOM preview + canvas export (zip/loose/panorama, PNG/JPEG, 1×/2×). Local-first: IndexedDB projects, share via URL hash. Vite + React 18 + TypeScript, zero backend.