YAML to .env Converter

Convert YAML files, Docker Compose configs, and Kubernetes ConfigMaps into formatted .env files in your browser.

At a glance

YAML to .env Converter transforms YAML configurations into standard dotenv files. It automatically extracts environment blocks from Docker Compose and Kubernetes ConfigMap manifests, recursively flattens nested mappings, handles quotes and export prefixes, and generates clean .env files client-side without transmitting credentials to any server.

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100% Client-Side YAML to .env Converter

Zero Server Uploads

Extract Docker Compose environments, Kubernetes ConfigMaps, or flatten nested YAML configurations into standard dotenv format right in your browser.

Local Sandbox
Presets:
0 lines • 0 chars
Dotenv Options
0 variables • 0 B
Ready

Why Use This YAML to .env Converter?

100% Client-Side Privacy: Your secrets, database passwords, and API keys are parsed and converted locally in your browser memory.
Docker Compose & K8s Manifest Extraction: Automatically identifies and extracts environment variables from Docker Compose services and Kubernetes ConfigMaps or Secrets.
Nested YAML Flattening: Flattens hierarchical structures using your choice of delimiter (_, __, or .).
Customizable Output Syntax: Control key casing (uppercase or preserve), quoting style (auto, double, single, or none), export prefixes, and alphabetical sorting.
Instant Export: Copy converted variables to clipboard or download as a .env file with one click.

How to Use YAML to .env Converter

1

Input Data

Paste YAML content, Docker Compose files, or Kubernetes manifests into the input editor or upload a .yaml file.

2

Configure Options

Choose key casing, nested delimiter, quote preferences, and export prefixes.

3

Copy or Download

Copy formatted .env variables to your clipboard or download as a .env file.

Docker Compose Environment to .env Conversion

Demonstrates extracting environment variables from a Docker Compose service definition into standard dotenv syntax.

Docker Compose YAML Source 
version: '3.8'
services:
  app:
    environment:
      - PORT=3000
      - NODE_ENV=production
      - DB_HOST=localhost
Generated .env File Processed 
PORT=3000
NODE_ENV=production
DB_HOST=localhost

Technical Specifications & Engine Details

Technical specifications and engine details for YAML to .env Converter
Specification Details
Supported Formats YAML, YML, TEXT → ENV, DOTENV, TEXT
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Modern browser with JavaScript enabled.
Performance Constraints 100% Client-Side. Runs locally in browser memory without network latency.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

All YAML parsing and dotenv conversion run client-side in browser memory. Zero data is ever sent to external servers.

Frequently Asked Questions

How does this tool extract Docker Compose environment variables?
The engine detects service definitions with environment: blocks, parsing both map syntax (KEY: value) and list syntax (- KEY=value) into clean .env format.
Does it support Kubernetes ConfigMap and Secret manifests?
Yes. The parser automatically extracts key-value pairs from data: and stringData: blocks while ignoring Kubernetes metadata, apiVersion, and kind headers.
Is my YAML or credential data sent to any server?
No. All parsing and conversion execute 100% client-side inside your browser sandbox. No secrets, keys, or configurations are ever transmitted to any remote server.
How are nested YAML properties converted?
Hierarchical YAML structures are recursively flattened using your chosen delimiter: single underscore (DB_HOST), double underscore (DB__HOST), or dot notation (DB.HOST).

Methodology

This tool runs entirely in your browser. The example above shows a representative input and the result it produces.

Last updated .

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