Why is it important to have a .env.example file?

The `.env.example` file acts as a template for your project's required environment variables. It tells other developers (and your future self) which variables are needed to run the application, without exposing sensitive keys. It's a crucial part of project setup and documentation.

Is my .env file content sent to a server?

No. This tool operates entirely within your browser. The contents of your `.env` and `.env.example` files are never uploaded or stored anywhere, ensuring your secrets remain secure.

What does 'Missing in .env' mean?

This means a variable is present in your template file (`.env.example`) but is not defined in your actual environment file (`.env`). This is a common cause of application errors, as the code may be expecting a variable that doesn't exist.

What does 'Extra in .env' mean?

This indicates that a variable exists in your `.env` file but is not documented in your `.env.example` template. While not always an error, it's good practice to add these variables to the example file so other developers know they exist.

Does this tool check the values of the variables?

No, this tool only checks for the presence or absence of variable keys (the names of the variables). It does not read or compare the actual values (the secrets), which helps maintain your security.

.env Validator Studio

Config Security

Waiting for Input

Local .env Confidential

.env.example Public

Analysis

Missing (0)

Add to local .env

No missing keys

Extras (0)

Exists in .env only

No extra keys

Features

Real-Time

Instant feedback as you type. No clicking validation buttons required.

100% Secure

Runs entirely in your browser. Your API keys never leave your device.

Team Ready

Generate updated templates instantly to share with your team.

How to Use the Check Tool

Input

Paste your `.env` (with secrets) and `.env.example` (template) into the editors.

Analyze

The tool automatically compares keys in real-time.

Review

Check the 'Missing' and 'Extra' lists to see discrepancies.

Fix

Sync your files to prevent setup errors for your team.

Running this on a server? DigitalOcean gives you $200 free credit.

Frequently Asked Questions