Deploying React and Next.js portfolio demos safely

A frontend demo is useful when the full Next.js or React application depends on a private backend, protected repository or unavailable client environment. It should look and behave like a credible product while remaining technically separated from sensitive services.

01

Choose the correct deployment mode

A Vite or client-side React application can usually deploy as static files. Next.js can use static export when it does not require server actions, API routes, middleware-dependent logic or request-time rendering. Identify these boundaries before selecting hosting.

02

Replace backend dependencies deliberately

Use a small local data layer or documented mock responses for dashboards, catalogues and reports. Disable destructive controls and make simulated actions visibly behave like a demonstration rather than silently failing. Never place private API keys in browser JavaScript.

03

Preserve realistic interactions

Navigation, filters, responsive layouts, empty states and validation should still work. A portfolio visitor learns more from a coherent product journey than from a collection of disconnected screenshots, even when the underlying transactions are simulated.

04

Publish a sanitised repository

Keep the original project private and deploy from a separate demo repository or export folder. Remove Git history that contains secrets, disable production analytics and review the final browser bundle because anything shipped to the frontend can be inspected.