Guide · Reviewed 2026-09-04
How to Create a Safe .env.example File
Create .env.example by listing every required key with an empty value, a clearly fake placeholder, or a safe public default. Preserve comments that explain format and purpose, remove all live credentials, review generated output manually, and validate the example against the application's current configuration schema.
Written and reviewed by EnvDesk product team. Last updated .
What should the example contain?
Include required key names, expected format, safe defaults, and short comments for non-obvious values. Group related keys so onboarding does not require reverse-engineering application code.
What should be removed?
Remove tokens, passwords, private URLs, personal identifiers, and realistic-looking credentials. Prefix placeholders with words such as example or replace-me so nobody mistakes them for usable values.
How do you keep it current?
Compare the example with the application's schema or a known development environment during CI. Treat missing documentation as configuration drift and review changes alongside code that introduces new variables.