Environment Variable Editor

What Can the Environment Variable Editor Do?

The Environment Variable Editor is a pure frontend online tool for visually managing .env configuration files. Paste or import your .env file content, and the tool automatically parses it into a key-value pair list. You can edit, add, delete, and sort variables line by line, mark sensitive information for automatic masking, and export to .env, JSON, YAML, Shell, Docker Compose, TOML, and other formats. All operations happen locally in your browser—sensitive configuration data is never uploaded to any server.

Core Features

• Smart Parsing: Automatically identifies key-value pairs, comment lines, blank lines, quoted values, and multiline values
• Visual Editing: Key-value list-style editing with inline modification, addition, and deletion of variables
• Sensitive Data Protection: Mark variables as sensitive to auto-mask values; export with optional masking
• Multi-Format Export: Supports .env, JSON, YAML, Shell export, Docker Compose, and TOML formats
• Batch Operations: One-click add variables, batch delete, enable/disable variables

How to Use

Step 1: Paste your .env file content in the input box, or click "Load Example".

Step 2: Click "Parse" to automatically parse the content into a key-value pair list.

Step 3: Edit key names, values, and comments in the editor. Click 🔒 to mark sensitive variables.

Step 4: Select an export format and click "Export" or "Copy" to get the result. Use Ctrl+Enter for quick export.

Use Cases

Project Configuration Management

Developers manage .env configurations across different environments (dev/staging/production), quickly switching and comparing environment variables.

Sensitive Data Auditing

Audit environment variable files in projects, marking API keys, database passwords, and other sensitive information to prevent accidental leaks.

Format Conversion

Convert .env files to Docker Compose environment configs, Kubernetes ConfigMaps, Shell scripts, and other formats.

Team Collaboration

Generate .env.example template files with sensitive values masked, sharing them with team members to ensure consistent configuration structure.

Extended Knowledge

The .env file is a widely used configuration management approach in the Node.js ecosystem, introduced by the dotenv library. The format is KEY=VALUE, one variable per line, with # indicating comments. Values can be wrapped in single or double quotes, supporting multiline values and special characters. Docker Compose reads .env files via the env_file directive to inject container environment variables. The 12-Factor App methodology recommends storing configuration in environment variables rather than code, and .env files are a convenient implementation for local development.

FAQ