.env File Validator, Formatter & Converter
Check .env files for mistakes and exposed secrets, clean them up, and convert them to 19 formats — without uploading anything.
Help shape .env File Validator, Formatter & Converter
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Frequently Asked Questions
Yes. Parsing happens entirely in your browser, the text is never uploaded or written to storage, and closing the tab erases it. Secret values are masked on screen by default.
Duplicate keys, invalid names, spaces around =, unterminated or missing quotes, unquoted spaces or #, empty and placeholder values, undefined ${VAR} references, BOM and CRLF line endings.
AWS, GitHub, GitLab, Stripe, Slack, Google, OpenAI, Anthropic, SendGrid, Twilio and npm keys, JWTs, private keys, passwords inside database URLs, and any value whose name says SECRET, TOKEN or PASSWORD.
Yes, with dotenv-expand rules: ${VAR}, $VAR and ${VAR:-default}. Single-quoted values stay literal. Toggle expansion to see the final values.
Yes. Any value can be replaced with a cryptographically random base64url, hex, alphanumeric or UUID secret in one click.