.env.local.production «CERTIFIED ✪»

depending on the tool) is intended to be the production-equivalent of your local development settings. Why Use It? The primary reason for this file’s existence is testing the production build locally

: Use this file only for configurations that differ from the main production environment or for secrets that should not be in the repository. .env.local.production

: In many build systems, .env.local files have the highest priority, meaning they will override variables defined in .env , .env.production , or .env.local . depending on the tool) is intended to be

It was 2:47 AM on a Tuesday, and the entire internet was about to forget how to speak. : In many build systems,

If you see .env.local.production on a cloud server (AWS EC2, Heroku, Vercel), you have made a deployment error. These files belong on local workstations only.