.env File Validator

Validate .env files — catch missing values, spaces around =, duplicates and bad keys.

.env content:

How to use

Paste your .env content and click Validate. Issues are listed by line. Everything runs in your browser.

What issues are detected?

Missing =, spaces around =, duplicate keys, empty values, lowercase key names and unbalanced quotes.

Is my .env uploaded?

No — validation runs entirely in your browser. Still, avoid pasting production secrets.

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Every tool runs 100% in your browser — no uploads, no signups. If a tool saved you time, consider supporting us with a small donation.