Environment Configuration Comparison Tool
Pro Features
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Unlock Pro Features

Save time with presets and team collaboration

Configuration Presets

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Save your diff settings and redaction patterns for quick reuse

Shareable Links

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Generate secure links to share configurations with your team

Team Workspaces

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Collaborate with team members using shared presets and configurations

Free .env File Comparison Tool

Compare environment configuration files instantly, detect security issues, and prevent deployment failures. No registration required - start comparing .env files now!

⚡ Instant Comparison
🔒 Security Detection
🚀 Deployment Safety

Environment 1 (e.g., Development)

Environment 2 (e.g., Production)

Comparison Options

Configure how files are compared

Security & Privacy

Protect sensitive information

Comparison Results

Why Use EnvDiff for Environment File Comparison?

EnvDiff is the most comprehensive free tool for comparing .env files and preventing deployment failures. Our intelligent comparison engine detects missing environment variables, security vulnerabilities, and configuration mismatches that could break your application in production.

Key Features

  • Instant .env File Comparison - Upload or paste two environment files and get immediate results
  • Secret Detection - Automatically identifies API keys, passwords, and other sensitive data
  • CORS Validation - Ensures your ALLOWED_ORIGINS are properly configured for each environment
  • Parity Checking - Detects missing environment variables between development and production
  • Security Recommendations - Smart suggestions to improve your configuration security
  • Regex Redaction - Custom patterns to hide sensitive information during comparison

Perfect for DevOps Teams

Environment configuration errors are one of the leading causes of deployment failures. EnvDiff helps development teams, DevOps engineers, and QA professionals ensure environment parity and catch configuration issues before they reach production.

Common Use Cases

  • Comparing development vs production environment files
  • Auditing environment variables before deployment
  • Ensuring all team members have consistent local configurations
  • Identifying missing secrets or API keys
  • Validating CORS settings across environments
  • Security compliance checks for sensitive data

How to Compare .env Files

  1. Upload or Paste - Add your first environment file (e.g., development .env)
  2. Add Second File - Upload or paste your second environment file (e.g., production .env)
  3. Configure Options - Set comparison preferences and security settings
  4. Compare - Click "Compare Environments" to see detailed results
  5. Review Results - Get intelligent suggestions and security recommendations

Our tool works entirely in your browser - no data is sent to any server, ensuring your sensitive environment variables remain completely private and secure.