Validate .env Before Deploying
Catch config mistakes before they reach production.
💡 Catches duplicate keys, spaces around =, unquoted values, and naming-convention issues — then gives you a cleaned, sorted file and a ready-to-commit .env.example. Your secrets are parsed entirely in your browser and never uploaded.
CI/CD tips
A quick lint before deploy catches the duplicate key or stray space that would break config in production.
Aim for zero errors; review warnings for anything that could be misread by your loader.
Keep your committed .env.example in sync with the cleaned key list.
Nothing is uploaded — safe for production secrets.
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Also check out…
Generate a .env.example
Create a .env.example from your real .env so teamm
Debug a Broken .env File
Find why your environment variables aren't loading
Clean Up a Messy .env
Sort, de-duplicate, and normalise an .env file.
Enforce .env Naming Conventions
Check that environment variable names follow UPPER