.env.development May 2026

.env.development: A Best Practice for Managing Development Environment Variables

Part 4: .env.development vs .env.local – The Confusion Cleared

# .env.development VITE_BACKEND_URL=http://localhost:8080 VITE_APP_TITLE="My App (Local Dev)"

environment variables

The file .env.development is a configuration file used by developers to store specifically for the local development phase of a project. What is .env.development ? .env.development

Example .env.development file

But .env.development also teaches discipline. It forces you to separate configuration from code, a principle that pays dividends when you deploy. It’s the first place you look when something works locally but fails on a staging server. It’s the quiet guard that says, “That API key? You forgot to add it here.” It forces you to separate configuration from code,

The structure is intentionally simple and human-readable. A typical .env.development file might look like this: You forgot to add it here