Env Variable Template Generator — Secure .env.example Creator
Generate .env.example template files by building a list of environment variables with types, descriptions, and placeholder values. Paste an existing .env file to sanitise it into a safe template automatically. Copy or download the result instantly.
How to Use Env Variable Template Generator — Secure .env.example Creator
How to Use the Env Variable Template Generator:
Choose a Mode: Use Build mode to add variables manually, or Parse .env mode to convert an existing .env file with real values into a safe template.
Start with a Preset (Build mode): Click a preset button to load a pre-configured set of variables for your stack — Node.js API, Next.js App, Full Stack, or Django. You can add, remove, or edit any row after applying a preset.
Add Variables (Build mode): Click Add Variable to append a new row. Fill in the Name (automatically uppercased and sanitised), choose the Type, optionally enter a Section header to group related variables, and add a Description that will appear as a comment above the variable.
Set Types: Choose the type that best describes each variable — String, Number, Boolean, URL, Email, Secret, Port, or Path. The type determines the placeholder value used in the output. Secret variables get a change_me_in_production placeholder to remind you never to commit real values.
Custom Placeholders: Leave the Placeholder column empty to use the auto-generated value (shown in italic "auto"). Enter a specific value to override it — useful for defaults like JWT_EXPIRES_IN=7d or DEBUG=false.
Mark Required vs Optional: Tick the Req checkbox for variables that must be set before the application starts. The output adds (required) or (optional) to each comment line.
Organise with Sections: Enter a Section name (e.g. Database, Auth, Email) to group variables under a labelled separator. Variables with the same section name appear together under one header.
Parse an Existing .env (Parse mode): Switch to the Parse .env tab and paste your real .env file. Click Parse to template — the tool detects types from variable names and values, preserves comments and section headers, and replaces all real values with safe placeholders. The result is loaded back into Build mode for further editing.
Copy or Download: Click Copy to copy the generated .env.example to your clipboard, or Download to save it directly as .env.example with the correct filename.
Common Use Cases:
- New repository setup: Generate a .env.example before the first commit so contributors know which variables to configure.
- Onboarding documentation: Include a complete .env.example in the repository README or wiki to reduce setup time for new developers.
- Secret sanitisation: Paste a staging .env file and instantly get a clean template with all real values replaced before sharing.
- Monorepo projects: Build separate templates for each service (API, frontend, workers) using different presets.
- CI/CD documentation: Document the environment variables required by your pipeline using the required/optional markers.
Frequently Asked Questions
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