DotEnv Preview

Syntax-highlight .env files on GitHub with grouping, sensitive value detection, and copy buttons.

Stop squinting at raw .env files on GitHub. DotEnv Preview automatically formats environment variable files with syntax highlighting, smart grouping, and security alerts. HOW IT WORKS: 1. Navigate to any .env file on GitHub, GitLab, or Bitbucket 2. DotEnv Preview automatically formats the file 3. Variables are color-coded, grouped by prefix, and sensitive values are masked FEATURES: - Syntax highlighting: keys, values, comments all color-coded - Smart grouping by prefix (DB_, API_, AWS_, SMTP_, REDIS_, etc.) - Sensitive value detection — flags real secrets with a warning icon - Placeholder detection — highlights values like "changeme" or "your_key_here" - Click to copy any individual value - Copy entire file as .env with one click - Search and filter variables - Toggle between raw and formatted views - Line numbers - Auto-detects GitHub dark/light theme - Works on GitHub, GitLab, Bitbucket, and raw URLs WHO IT'S FOR: - Developers reviewing project configurations - DevOps engineers checking environment setups - Anyone who opens .env.example files on GitHub PRIVACY FIRST: - All formatting happens locally in your browser - No data is ever sent to external servers - No accounts, no sign-ups, no tracking - No analytics or cookies FREE TO USE: DotEnv Preview is completely free with no hidden costs.