.env Generator

Create environment variable templates for Next.js, React, Node.js, Django, Rails, Laravel, and Spring.

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Input
Output

About .env generator

.env Generator keeps its state in memory and nowhere else. That is why it forgets everything on reload, and why it cannot leak anything.

Load the page once and it works offline from then on. Nothing about the tool needs a connection after that first request.

You will find it under Project config, alongside 11 other tools for the same sort of job.

Includes database, auth, email, storage, and logging presets.

How to use it

01
Start it
Every control is on the tool itself. Keyboard shortcuts, where there are any, are listed beside it.
02
Watch it run
It updates in the page as you go. Nothing is sent anywhere, so it keeps working with the network off.
03
Close when done
Nothing is stored between visits. Reloading gives you a clean start rather than picking up where you left off.

Examples

Next.js with PostgreSQL
Generate a .env template for a Next.js app with a database
Input
framework: nextjs
database: postgresql
auth: true
email: false
storage: false
logging: false
Output
# ============================================
# Environment Configuration
# Framework: nextjs
# Generated template - fill in your values
# ============================================

# Application
NODE_ENV=development
APP_NAME=my-app
APP_PORT=3000
APP_URL=http://localhost:3000
APP_SECRET=change-me-to-a-random-secret

# Next.js / React
NEXT_PUBLIC_API_URL=http://localhost:3000/api
NEXT_PUBLIC_APP_NAME=my-app

# Database
DATABASE_URL=postgresql://user:password@localhost:5432/mydb
DB_HOST=localhost
DB_PORT=5432
DB_NAME=mydb
DB_USER=user
DB_PASSWORD=password

# Authentication
JWT_SECRET=your-jwt-secret-here
JWT_EXPIRES_IN=7d
# OAuth Providers
GOOGLE_CLIENT_ID=
GOOGLE_CLIENT_SECRET=
GITHUB_CLI…

Questions

Does .env Generator work offline?+

Yes. It is JavaScript running in this tab, so once the page has loaded it needs nothing further from the network. Put the machine in flight mode and it carries on. Nothing you do here is sent anywhere, because there is nowhere for it to go.

Does it remember anything between visits?+

No. Reload the page and it starts from nothing. There is no account, no saved state and no cookie holding your last session. That is a deliberate trade: it cannot lose your data because it never keeps any.

Is it accurate?+

Timing comes from performance.now(), the high resolution clock the browser provides, rather than from setInterval, which drifts by a few milliseconds every tick and compounds over minutes. What can still shift things is the browser throttling a tab in the background, so leave it visible if the timing matters.

Does it make a sound?+

Where a sound makes sense, it is generated with the Web Audio API rather than loaded as a file, so there is nothing to download and nothing to block. Browsers refuse to start audio until you have interacted with the page, which is why the first press is what switches it on.

Can I use .env Generator on a phone?+

Yes. The controls are sized for touch and the layout collapses to one column on a narrow screen. Bear in mind that a phone locking its screen will suspend the page, and timing stops with it.