Next.js Environment Variable Structure

Complete guide to Next.js environment variable management.

File Structure

my-nextjs-app/
├── .env                      # Shared defaults (committed)
├── .env.local               # Local secrets (gitignored)
├── .env.development         # Development defaults (committed)
├── .env.development.local   # Local dev overrides (gitignored)
├── .env.production          # Production defaults (committed)
├── .env.production.local    # Production secrets (gitignored)
├── .env.test                # Test environment (committed)
└── .env.example             # Documentation (committed)

File Precedence