Dockerfile Generator
About .env Generator
The Environment Variables (`.env`) & `.env.example` Generator creates structured environment templates for Next.js, Node.js, Django, Laravel, and Rails with randomized cryptographically secure secret keys (JWT secret, API keys, database URLs, port configs).
How to Use .env Generator
Step 1
Select your tech stack preset or build custom variable fields.
Step 2
Click "Generate Secrets" to create fresh cryptographic keys.
Step 3
Inspect the generated `.env` and `.env.example` file tabs.
Step 4
Click "Download .env" to save into your project root.
Practical Use Cases for .env Generator
Project Initial Setup & `.env.example` Creation
Generate clean `.env` and sanitized `.env.example` documentation files for open-source repositories and team onboarding.
Generating Cryptographically Secure Random Secrets
Auto-generate 256-bit random hex/base64 secret keys for `JWT_SECRET`, `NEXTAUTH_SECRET`, `APP_KEY`, and session encryption.
Input & Output Examples
Generating Next.js + Database .env Template
Preset: Next.js + PostgreSQL + NextAuth
DATABASE_URL="postgresql://user:password@localhost:5432/mydb?schema=public"\nNEXTAUTH_URL="http://localhost:3000"\nNEXTAUTH_SECRET="8f4b...32_byte_secure_key"\nPORT=3000
Key Features & Performance
- ✓Framework presets: Next.js / NextAuth, Node.js / Express, Python / Django / FastAPI, Ruby on Rails, and Laravel.
- ✓Generates secure 32-byte / 64-byte random secrets using native `crypto.getRandomValues()`.
- ✓Generates both `.env` (with real values/secrets) and sanitized `.env.example` (with placeholders).
- ✓100% Client-Side generation.
- ✓1-Click Copy and 1-Click `.env` download.
Key Terminology & Definitions
.env File
A local configuration file containing sensitive key-value environment variables that should NEVER be committed to Git repositories.
.env.example File
A sanitized template file committed to Git documenting all required environment variable names with placeholder values.