.env-validator
Valideer de .env-syntaxis, spoor dubbele sleutels op en bekijk alle variabelen in een tabel.
Veilig voor API-sleutels: alle verwerking vindt plaats in de browser.
Misschien ook interessant
About
A free tool to validate and analyze .env files for syntax errors, duplicate keys, and variable definitions — all in your browser. Supports Node.js dotenv conventions and Docker Compose env_file format.
Sensitive values like API keys are automatically masked in the variable table. No data ever leaves your device.
How to Use
Paste .env Content
Paste your .env file content into the left text area.
Real-Time Analysis
Syntax errors, duplicate keys, and variable list update instantly.
Fix Errors
Review flagged lines and fix them in your .env file.
Glossary
- .env File
- A text file defining environment variables in KEY=VALUE format. Typically git-ignored and not committed to repositories.
- Environment Variable
- OS-level variables that applications read at runtime for configuration (DB credentials, API keys, feature flags, etc.).
- 12-Factor App
- A methodology for building SaaS apps. Factor III states configuration should be stored in environment variables.
- dotenv
- A Node.js library that reads a .env file and injects the variables into process.env.
- Secret Management
- Best practices for securing API keys and credentials. Production environments should use AWS Secrets Manager, Vault, etc.
- Comment Line
- In .env files, lines starting with # are comments and are ignored by the parser.
FAQ
- Q.Is it safe to paste API keys?
- Yes. All processing runs locally in your browser. No data is ever transmitted to a server.
- Q.Are quoted values supported?
- Yes. Single and double-quoted values (e.g. SECRET="my value") are parsed correctly.
- Q.Does it work for .env.local or .env.production?
- Yes. Any file following the same KEY=VALUE format is supported.
- Q.Are multi-line values supported?
- No. This tool validates single-line KEY=VALUE entries. Multi-line heredoc values are not supported.
Use Cases
🖥️ Node.js Development
Debug dotenv syntax before running your app.
🐳 Docker Compose
Validate env_file referenced in docker-compose.yml.
🔐 Pre-Deploy Check
Confirm all required variables are defined before deployment.
👥 Team Sharing
Clean up .env.example before sharing with the team.
Feedback sturen
Laat ons uw mening weten om ons te helpen de tool te verbeteren.
Feedback wordt tijdelijk opgeschort
De server is overbelast of spambeveiliging is actief. Probeer het later opnieuw.