.env Validator Studio
Config SecurityAnalysis
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.
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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.