.env.local.production ((full)) -

It looks for environment files and finds both .env.production and .env.local.production .

For example, in a Next.js project, you might have:

Enter .env.local.production :

Since .env.local.production isn't in your repo, other developers (or your future self) won't know which variables are required. Maintain a .env.example file that lists the keys (but not the values) needed for the app to run. Example Scenario: Next.js .env.local.production

In many modern frameworks (like Next.js, Vite, and Gatsby), there is a specific hierarchy of file loading. While .env.production is loaded for production builds, acts as an override specifically for local instances of a production build.

You commit .env.production to Git containing non-sensitive public variables (e.g., public asset URLs or tracking IDs).

But as applications grow in complexity, a new, slightly intimidating file name has started appearing in boilerplates and advanced configuration guides: . It looks for environment files and finds both

But you cannot use your live production database or live payment API keys on your laptop. You need a local "production-like" environment.

.env.production is often committed to version control if it contains non-sensitive data (like public API URLs). However, you should never commit secrets like database passwords, Stripe private keys, or AWS credentials. .env.local.production allows you to store these secrets on your production server without them ever touching your GitHub or GitLab repository. 2. Local Production Testing

By using .env.local.production , you can override the API_KEY environment variable set in the .env file, ensuring that your application uses the correct API key in production. Example Scenario: Next

The use of .env.local.production offers several benefits:

Because .env.local.production is ignored by git, other developers on your team won't know it exists or what variables it requires. Always maintain a .env.example file that lists the keys (but leaves the values blank or uses placeholders):

This table summarizes the standard file types across popular frameworks: