ENV File Generator & Validator
Generate .env files, create masked .env.example templates, and securely compare environments to detect missing variables without leaving your browser.
Environment Variables
Output File
# Application environment NODE_ENV=development # Database connection DB_HOST=localhost
ENV File Generator & Validator Overview
Managing environment variables across multiple developers and environments (local, staging, production) is a notorious source of bugs. The ENV File Generator simplifies this by allowing you to visually construct `.env` files and securely mask them into `.env.example` templates.
Additionally, the built-in Environment Comparer ensures that when pulling the latest code from Git, you can instantly detect if any new API keys or database connections were added to the `.env.example` that are missing from your local `.env`.
Frequently Asked Questions
1. Why should I use a .env.example file?
A `.env.example` file acts as a template for your project. It lists all the environment variables your application requires to run, but without containing the actual sensitive values (like API keys or database passwords). This file is safe to commit to Git, whereas your actual `.env` file should always be ignored.
2. Is it safe to paste my .env file here?
Yes! The Environment Comparer operates 100% locally in your web browser. The tool parses your `.env` text via JavaScript on your machine, meaning none of your secret keys are ever sent across the network or stored on our servers.
3. What does the Comparer actually look for?
It ignores comments (`#`) and empty lines, and splits each line by the `=` sign to extract the exact variable key. It then cross-references your Target environment against your Source environment to highlight which keys are completely missing, helping you catch deployment issues before they happen.