.env · create🔥 popular

ENV Generator

Generate .env templates for Node.js, Next.js, Django, Rails, Laravel, and more. Ready-to-use boilerplates with sensible defaults.

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pick stacks

output · 10 keys

# Next.js
NEXT_PUBLIC_SITE_URL=http://localhost:3000
DATABASE_URL=postgresql://user:password@localhost:5432/mydb
NEXTAUTH_URL=http://localhost:3000
NEXTAUTH_SECRET=NKXyuV3YME15pZfKnCwXJuRu2vTwIPEt350OqXqGTCYCGAvn
NEXT_PUBLIC_SUPABASE_URL=
NEXT_PUBLIC_SUPABASE_ANON_KEY=
SUPABASE_SERVICE_ROLE_KEY=
STRIPE_SECRET_KEY=sk_test_
STRIPE_WEBHOOK_SECRET=whsec_
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_test_

per-key copy

NEXT_PUBLIC_SITE_URL
Next.js · http://localhost:3000
DATABASE_URL
Next.js · postgresql://user:password@l…
NEXTAUTH_URL
Next.js · http://localhost:3000
NEXTAUTH_SECRET
Next.js · NKXyuV3YME15pZfKnCwXJuRu2vTw…
NEXT_PUBLIC_SUPABASE_URL
Next.js · empty
NEXT_PUBLIC_SUPABASE_ANON_KEY
Next.js · empty
SUPABASE_SERVICE_ROLE_KEY
Next.js · empty
STRIPE_SECRET_KEY
Next.js · sk_test_
STRIPE_WEBHOOK_SECRET
Next.js · whsec_
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY
Next.js · pk_test_

click any row's copy button to grab just that line

Framework-specific generators

Node.js .env

/env-generator/nodejs

Next.js .env

/env-generator/nextjs

Django .env

/env-generator/django

Python (FastAPI / Flask) .env

/env-generator/python

Go .env

/env-generator/go

Docker Compose .env

/env-generator/docker

Kubernetes .env

/env-generator/kubernetes

Stripe .env

/env-generator/stripe

Firebase .env

/env-generator/firebase

Supabase .env

/env-generator/supabase

OpenAI .env

/env-generator/openai

Laravel .env

/env-generator/laravel

What it does

▸Ready-made templates for Node.js, Next.js, Django, Rails, Laravel
▸Service-specific templates (Stripe, Firebase, Supabase, OpenAI)
▸Auto-generates secrets in-place (JWT, session, APP_KEY)
▸Download or copy the final .env in one click
▸Stack-aware naming conventions

Privacy

Runs 100% in your browser. Your .env never touches our servers.

client-side only

Usage examples

Case 1 · Next.js base

stacks: nextjs

NEXT_PUBLIC_SITE_URL=http://localhost:3000
DATABASE_URL=postgresql://user:password@localhost:5432/mydb
NEXTAUTH_SECRET=<48-byte-random>
NEXT_PUBLIC_SUPABASE_URL=
NEXT_PUBLIC_SUPABASE_ANON_KEY=

Case 2 · Stripe service

stacks: stripe

STRIPE_SECRET_KEY=sk_test_
STRIPE_PUBLISHABLE_KEY=pk_test_
STRIPE_WEBHOOK_SECRET=whsec_
STRIPE_PRICE_ID_PRO=price_

Case 3 · Combined (Next.js + Stripe + Supabase)

stacks: nextjs + stripe + supabase

# Next.js
NEXT_PUBLIC_SITE_URL=...
NEXTAUTH_SECRET=<random>

# Stripe
STRIPE_SECRET_KEY=sk_test_
STRIPE_WEBHOOK_SECRET=whsec_

# Supabase
NEXT_PUBLIC_SUPABASE_URL=https://xxxx.supabase.co
SUPABASE_SERVICE_ROLE_KEY=

When to use this tool

→Starting a new project and want a sensible .env scaffold
→Bootstrapping a .env.example for a repo that's missing one
→Combining stacks (e.g. Next.js + Stripe + Supabase) in one file
→Onboarding new teammates with a known-good starting config
→Generating fresh secrets when rotating keys

Common mistakes

⚠Shipping generated template values to production (the defaults are placeholders)
⚠Committing the generated file instead of the example — always strip values with the .env.example generator first
⚠Forgetting the NEXT_PUBLIC_ prefix for anything you want exposed to the browser
⚠Mixing Stripe test (sk_test_) and live (sk_live_) keys in the same file — pick one per environment

ENV Generator — .env templates for every stack

Stop copy-pasting .env.example files from GitHub. The env generator produces ready-to-paste environment files for Node.js, Next.js, Django, Rails, Laravel, and popular services like Stripe, Firebase, and Supabase. Secrets are generated with crypto.getRandomValues right in your browser.