.env Checker & .env.example Generator

Nothing leaves your browser

Find mistakes in a .env file, compare it with the expected keys, and get an .env.example that never carries a real secret.

Check a .env file and build a safe .env.example from it, entirely in this tab. Nothing is uploaded or saved, and the findings name keys and line numbers but never repeat a value.

Your .env

Expected keys (.env.example, optional)

Keep safe values (ports, true/false, localhost URLs)Write placeholders such as your_key_here

Generated .env.example

Paste a .env above to build its example file.

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