Working with .env files is something we all do, but it’s surprisingly easy to make mistakes.
Duplicate keys, malformed values, missing quotes… they can be annoying to debug.
At some point I thought:
“Why isn’t there a simple tool that does all the work for me?”
Then I realized something else:
An online .env viewer sounds like a terrible idea.
If I saw one, I’d assume it’s stealing companys' keys.
So I built one with a constraint:
Everything must run 100% in the browser and be 100% safe.
- No uploads
- No backend
- No storage
- No network requests at all
All very highlighted and verifiable through devtools.
The result is a small tool that:
- Parses .env files instantly
- Detects duplicate keys
- Highlights syntax issues
- Shows everything in a clean table
Additionally, I included some other pages to merge multiple .env files together, or to generate a fresh .env file with the most commonly used keys.
https://env-tools.vercel.app/
I’d really appreciate some feedback, especially on how to make the “this is safe” part clearer. Hope this tool is useful and thank you very much in advance!