mockup-sandbox

You can preview web UI components safely using an isolated frontend sandbox that embeds live iframe previews directly on a canvas, enabling rapid prototyping and design exploration without affecting the main application.

The best way to prototype multi-viewport UI layouts is using a Vite-based dev server that serves per-component preview routes and embeds them via iframes to simulate mobile, tablet, and desktop views simultaneously.

To set up component previews mapped to specific files, initialize a Vite dev server in a dedicated artifacts directory and use a component registry to route and serve individual previews at structured URL paths.

Yes, you can create design variants and extract prompts during UI prototyping by using design-exploration workflows that support live preview updates and variant creation within the isolated sandbox environment.

UI prototyping in an isolated sandbox requires clear asset and script organization under a specific artifacts folder, ensuring that all design exploration and component preview work remains reproducible.

You should not use a sandbox for UI prototyping if your task requires direct integration with the main application's live data or if you need to deploy the prototype immediately to production without Vite.