.env File Generator

About this tool

Cleans up and validates a .env file — paste your KEY=VALUE lines and it flags duplicate keys, invalid key names, and values that need quoting, then gives you back a tidy, de-duplicated file ready to use.

Everything runs locally in your browser — your environment variables (including anything that looks like a secret) are never uploaded anywhere.

Frequently asked questions

What counts as an "invalid" key name?

Standard .env/shell convention expects keys made only of letters, digits, and underscores, not starting with a digit (e.g. API_KEY, not 2ND_KEY or api-key) — keys that don't follow this may not be read correctly by every tool that loads .env files.

What happens to duplicate keys?

Only the last occurrence of a repeated key is kept in the cleaned output (matching how most .env loaders behave), and it's flagged as an issue so you can double check that's what you intended.

Is my .env content uploaded anywhere?

No — parsing and cleanup both happen entirely in your browser.