Syntax-highlight .env files on GitHub with grouping, sensitive value detection, and copy buttons.
Users
9
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#205K
#172K among extensions
Version
1.0.1
updated 16 Apr 2026
Users
monthly, 7 months
Latest, 16 Oct 2026:9 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About DotEnv Preview
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.