Are my database credentials or API keys safe?

Yes, 100%. All parsing and formatting takes place entirely in your web browser's memory. No data is ever sent to any remote server.

Updated: August 2026 • Verified v1.2

JSON to .env Environment File Converter

Developer ToolsHigh Usage

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.

Recursive AST Flattening: JSON Object ➔ KEY_CHILD_PATH=value .env format

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Understanding Your Results

Recursively traverses nested JSON objects and arrays, flattens paths into uppercase snake_case (`DATABASE_HOST=...`), applies optional key prefixes, and provides 1-click `.env` file download.

Practical Guidance & Next Steps

Processes data entirely on the client, making it safe for private server configs, database passwords, and API secrets.

What is this?

A developer DevOps utility that transforms JSON configurations into twelve-factor `.env` files.

How does it work?

1. Paste your JSON configuration payload into the editor. 2. Optionally customize a key prefix (e.g. `NEXT_PUBLIC`). 3. Copy the formatted `.env` text or download the file in 1 click.

Why use it?

Quickly turns JSON configs into environment variables for Docker, Kubernetes, and local development environments.

Technical Scope & Calculation Limitations

Parses standard valid JSON objects and primitives.

Frequently Asked Questions

Nested object keys are joined with underscores in uppercase snake case (e.g. `{"database": {"host": "localhost"}}` becomes `DATABASE_HOST=localhost`).

Windows Desktop & Widget Options