next-dynenvRuntime Environment Variables for Next.js

Build once, deploy anywhere. Change your environment without rebuilding your app.

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Runtime Configuration

Change environment variables without rebuilding. Build once, deploy to development, staging, and production with different configs. Perfect for Docker, Kubernetes, and modern CI/CD workflows.

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Secure by Default

XSS protection via JSON escaping, immutable values with Object.freeze, and strict NEXT_PUBLIC_ prefix enforcement. Your secrets stay secret.

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Type-Safe Parsers

Convert environment strings to booleans, numbers, arrays, JSON, URLs, and enums with full TypeScript support. Stop wrestling with string values.

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Works Everywhere

One consistent API across server components, client components, API routes, and middleware. Zero mental overhead.

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Zero Config

Drop in PublicEnvScript, start calling env(). No build configuration, no webpack plugins, no complexity. It just works.

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Next.js 15/16 Ready

Fully compatible with the latest Next.js features including async server components and React 19. Future-proof your stack.