.env.local ((better)) Jun 2026

Ensure the .env.local file is in the root of your project directory, not inside /src or /public .

A .env.local file is a plain text file containing key-value pairs used to configure an application on a developer's local machine. The "local" suffix indicates that the settings inside this file are environment-specific and tailored exclusively to an individual developer's workstation. The Core Purpose .env.local

For Python frameworks like Django and Flask, you need an external library to parse .env files. A popular choice is python-dotenv , which you can install via pip . This will allow you to load your environment variables before your application starts. Ensure the

: Environment-specific local overrides.

Next.js features built-in support for .env.local , meaning you do not need to install dotenv . Next.js also splits variables into server-side (secret) and client-side (public). The Core Purpose For Python frameworks like Django

Older React apps built with Create React App look for the REACT_APP_ prefix.