YAML Tool & Playground

Edit, validate, convert, and format YAML files online. Perfect for configuration files, Docker Compose, Kubernetes, and more.

YAML Editor

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# Welcome to YAML Tool & Playground # Edit this YAML or choose an example from the toolbar above # Basic YAML Configuration Example app_name: "My Application" version: "1.0.0" environment: "production" # Database Configuration database: host: "localhost" port: 5432 name: "app_db" credentials: username: "admin" password: "secret" # Server Settings server: port: 8080 timeout: 30 ssl_enabled: true # Enabled Features features: - "authentication" - "logging" - "caching" - "api" # Environment Variables (example) env_vars: LOG_LEVEL: "INFO" DEBUG_MODE: false MAX_CONNECTIONS: 100 # Tags and Anchors example defaults: &default_settings timeout: 30 retries: 3 service_one: <<: *default_settings name: "Service One" service_two: <<: *default_settings name: "Service Two" timeout: 60 # Override default

File: config.yaml

Lines: 25

Valid YAML

YAML Tools

Validate YAML

Check if your YAML is syntactically correct and well-formed.

Convert YAML

YAML to JSON YAML to XML YAML to Properties YAML to TOML

Minify / Beautify

Minify (Remove spaces)

Beautify (Format)

Export & Share

YAML Examples

YAML Syntax Guide

Basic Structure

key: value

Simple key-value pair

# This is a comment

Comments start with #

key: "string value"

Strings can be quoted

number: 42 float: 3.14 boolean: true null_value: null

Basic data types

Collections

# List/Array fruits: - Apple - Banana - Cherry

List with dashes

# Inline list fruits: [Apple, Banana, Cherry]

Inline array syntax

# Nested objects person: name: John age: 30 address: street: Main St city: Boston

Nested structures

Advanced Features

# Multi-line strings description: | This is a multi-line string.

Multi-line text

# Anchors and aliases defaults: &default_settings timeout: 30 service: <<: default_settings="" div="" myservice="" name:="">

Reuse content with anchors

# Environment variables database_url: ${DB_URL}

Variable substitution

How to Use This YAML Tool

1. Edit YAML - Write or paste YAML in the editor. Use the examples for inspiration.
2. Validate Syntax - Click "Validate Syntax" to check for errors in your YAML.
3. Convert Formats - Convert YAML to JSON, XML, Properties, or TOML format.
4. Format/Beautify - Use the beautify tool to properly format your YAML with correct indentation.
5. Minify - Remove unnecessary whitespace to create compact YAML.
6. Export & Share - Download your YAML file, copy to clipboard, or generate a shareable link.
7. Learn Syntax - Refer to the YAML Syntax Guide for quick reference.
8. Try Examples - Load ready-to-use YAML examples for common use cases.

Note: YAML (YAML Ain't Markup Language) is a human-readable data serialization language. It's commonly used for configuration files, data exchange, and in applications like Docker, Kubernetes, Ansible, and many CI/CD systems.

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