YAML Formatter

Format, beautify, and validate YAML configuration files. Convert between YAML, JSON, and XML formats.

YAML Input:

Formatted Output:

Settings:

Indent Size

YAML Formatting Guide

YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used in configuration files, Kubernetes manifests, and Docker Compose. This tool helps you format and validate YAML.

Features:

✨ Format

Beautify YAML with proper indentation and formatting.

✓ Validate

Check YAML syntax and structure for errors.

➜ Convert

Convert YAML to JSON and vice versa.

Common Use Cases:

Kubernetes: Format and validate K8s manifests
Docker: Validate docker-compose.yml files
Configuration: Format app config files
CI/CD: Validate GitHub Actions and GitLab CI files

YAML Syntax Rules:

Use spaces (not tabs) for indentation
Keys and values separated by colon (:)
Lists use dash (-) for each item
Strings don't need quotes (unless containing special chars)
Indentation defines hierarchy