Zoom‑centric interfaces have long been split between two dominant approaches. Prezi offers a polished, AI‑enhanced presentation canvas but locks the zoom engine behind a proprietary SaaS, charging $15/month for full features and flattening effects when exporting to PowerPoint. Users also report motion‑sickness from its rapid pan‑zoom transitions, limiting its suitability as a general navigation tool for teams seeking interactive storytelling.

The open‑source alternative, impress.js, reproduces Prezi‑style camera moves using CSS3 transforms. Its step‑based model places static “slides” in 3‑D space, making it ideal for linear presentations but offering no dynamic view mounting, depth management, or navigation state, or custom UI experiments in modern apps. Consequently, developers treating it as a UI router end up with all steps resident in the DOM at once.

Enter Zumly, a solo‑crafted library that treats zoom as a navigation primitive. By marking an element as zoomable and pointing it to a target view, Zumly injects and scales the new component during the transition, mirroring SPA routing rather than slide‑deck behavior, and can integrate with any framework. The demo site runs entirely on its own engine, proving the concept works without the overhead of full presentation frameworks.