~/envtools

About envtools

envtools is a free, browser-based toolkit for working with .env files. No login. No upload. Nothing to install.

Why we built this

Every developer has, at least once, shipped a broken deploy because of a missing environment variable. Or committed a secret to git and spent the next hour rotating keys. Or wasted a morning trying to figure out why a production config looks fine but nothing works.

The existing tools for these problems are scattered across CLI utilities, dead GitHub repos, and Stack Overflow answers from 2018. We built envtools to consolidate the common .env workflows into one fast, keyboard-friendly site — with every tool running entirely in your browser so you never have to trust an upload form.

How it works

All parsing, validation, and conversion happens client-side using vanilla JavaScript and the browser's built-in crypto.getRandomValues for secret generation. No server receives the content of your .env. No analytics captures what you paste.

The only server-side code is anonymous page-view counting and the optional admin dashboard — neither has access to the data you paste into any tool.

What's in the toolkit

16 client-side tools covering validation, generation, conversion, security scanning, and workflow. A few highlights:

  • ENV Validator — catches missing, duplicate, and malformed entries
  • ENV Leak Checker — scans for 17+ known secret patterns (AWS, Stripe, GitHub, OpenAI, private keys)
  • ENV Generator — ready-made templates for Node.js, Next.js, Django, Rails, Laravel, Stripe, Firebase, Supabase, and OpenAI
  • Secret Generator — JWT, API keys, passwords with configurable entropy

See the full list.

Editorial philosophy

We publish guides alongside the tools because a tool without context is just a black box. Our 6 long-form guides cover what .env files actually do, how frameworks load them, and how to fix the most common errors. Every guide is written by developers who've actually shipped the failure modes described.

What we won't do

  • No uploads. Nothing you paste reaches our servers.
  • No login walls. Every tool works without signup.
  • No newsletter modals. You came for a tool, you leave with a tool.
  • No dark patterns. No trial countdowns, no "unlock" buttons, no fake urgency.

Open to contributions

Found a bug, want to suggest a tool, or have SEO / content feedback? Get in touch.

License

All tools on https://envtools.dev/ are free to use. We may display non-intrusive ads to cover hosting costs — see the privacy policy.