Dotenv syntax validator
Validate dotenv syntax without sending secrets to a server.
A small formatting error can make an environment variable disappear. EnvLint parses common dotenv syntax and shows invalid lines directly in the browser.
Quoted values
Handle single quotes, double quotes, whitespace, and embedded # characters.
Export prefixes
Read common shell-style lines such as export NODE_ENV=production.
Embedded equals
Keep values intact when a URL or token contains an equals sign.
Why dotenv validation matters
Dotenv files are informal but critical. Frameworks often parse them at startup, then fail later when a key is empty, misspelled, duplicated, or loaded with the wrong value.
Dotenv validator questions
- Does EnvLint replace my framework dotenv loader?
- No. It is a local validation pass before your app or CI reads the file.
- Can I use it for Rails, Django, Node, or Go projects?
- Yes. The checks target common dotenv conventions used across these ecosystems.