DotEnv Preview

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

As of June 2026, DotEnv Preview has 3 users in the Developer Tools category.

Developer Tools

Chrome Web Store ↗.crx

Users0%

Rating0%

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— reviews

Reviews0%

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Version

1.0.1

Manifest V3

90-day change · In the last 90 days this extension 1 version update, changed permissions.

History

7 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	—	—	—	1.0.0
Apr 20, 2026	1	—	—	1.0.0
Apr 25, 2026	—	—	—	1.0.1
May 13, 2026	1	—	—	1.0.1
May 19, 2026	2	—	—	1.0.1
May 26, 2026	—	—	—	1.0.1
Jun 8, 2026	2	—	—	1.0.1
Now	3	—	—	1.0.1

Changelog

Apr 20, 2026

permissions

storage, activeTab

storage, activeTab, tabs

Permissions & access

Permissions: storageactiveTabtabs
Host access: None declared

Screenshots

About

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.