.env · generator · Go
Go .env Generator
Go apps typically use godotenv (joho/godotenv) or envconfig (kelseyhightower/envconfig) to load .env. This generator produces a Go-idiomatic .env with PORT, DATABASE_URL, JWT_SECRET, and CORS origins.
.env for Go · 6 keys
APP_ENV=development PORT=8080 DATABASE_URL=postgres://user:pass@localhost:5432/app?sslmode=disable JWT_SECRET=FrhDnlB8Z1auP4d88KI5QX4KB6lDcEqpZcDwFoZZmYB1meNt LOG_LEVEL=info CORS_ORIGINS=http://localhost:3000
Secrets regenerate on every page load. Want to combine stacks (e.g., Next.js + Stripe + Supabase)? Use the full generator.
How to use this .env in Go
- 1.Save as .env in the project root.
- 2.Add godotenv: go get github.com/joho/godotenv.
- 3.Call godotenv.Load() at the very top of main(), before any other config reads.
- 4.Access via os.Getenv("KEY") or decode into a struct with envconfig.Process().
Gotchas
- ⚠Call godotenv.Load() before any package-level init() that reads env — init order bites here.
- ⚠In production, most Go hosts inject env via the kernel — don't ship .env to prod.
- ⚠sslmode=disable is fine for dev Postgres but a hard no in prod — switch to require or verify-full.
Common keys explained
APP_ENVdevelopment | staging | production.
PORTHTTP bind port. 8080 is the Go default.
DATABASE_URLPostgres DSN. Use sslmode=disable locally only.
JWT_SECRETHMAC key for signing JWTs. Generate, don't type.
LOG_LEVELOne of trace | debug | info | warn | error. Matches zerolog/slog.
CORS_ORIGINSComma-separated origins for the CORS middleware.
Related tools
Other stacks
Node.js .env
/env-generator/nodejs
Next.js .env
/env-generator/nextjs
Django .env
/env-generator/django
Ruby on Rails .env
/env-generator/rails
React (Vite) .env
/env-generator/react
Python (FastAPI / Flask) .env
/env-generator/python
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