No. Parsing and checks run entirely in your browser.

Does this hide secrets by default?

You can toggle value visibility to reduce accidental exposure during screen sharing.

.env File Validator

Runs in browser

Validate .env syntax and detect duplicates and risky entries.

Parse and validate .env content in browser. Detect duplicate keys, empty values, suspicious formatting, and potentially sensitive variable names.

.env content

Parsed variables

Show values

10 variables1 empty2 duplicates

Key	Value	Status
DATABASE_URL	postgresql://user:password@localhost:5432/mydb	✓ Valid
API_KEY	sk-1234567890abcdef	⚠ Suspicious(Sensitive)
SECRET_KEY	my-super-secret-key	⚠ Suspicious(Sensitive)
NODE_ENV	development	✓ Valid
PORT	3000	✓ Valid
DEBUG	true	✓ Valid
NEXT_PUBLIC_API_URL	https://api.example.com	⚠ Suspicious(Sensitive)
EMPTY_VAR	—	⚠ Empty(Empty value)
DUPLICATE_KEY	first	✗ Duplicate(Duplicate key; Sensitive)
DUPLICATE_KEY	second	✗ Duplicate(Duplicate key; Sensitive)

🔒 Runs in your browser · No uploads · Your data never leaves your device

Paste .env text
Insert key=value lines in the left panel.
Review table
Inspect status tags for valid, empty, duplicate, and suspicious entries.
Copy parsed JSON
Export parsed key/value data for debugging or docs.

Checking a .env file before deployment — Paste your .env content to detect duplicate keys, empty required values, and suspicious variable names before deploying to production.
Auditing environment variable configuration — View all key-value pairs in a structured table to confirm correct values are set across different environment files.

Are values uploaded?: No. Parsing and checks run entirely in your browser.
Does this hide secrets by default?: You can toggle value visibility to reduce accidental exposure during screen sharing.

.env file: A plain-text file containing key=value environment variable definitions, loaded at app startup by libraries like dotenv.
Environment variable: A named value passed to a running process to configure its behavior — commonly used for secrets, API keys, and feature flags.

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