YAML Validator & Formatter

Validate and format YAML files. Convert between YAML and JSON.

#yamlformatter #yamlvalidator #yamllint

Input YAML

Output

Results will appear here...

How to use this tool

Follow these steps to get the most out of the YAML Validator & Formatter.

Paste your YAML content into the editor.

The tool validates the syntax in real-time.

Click 'Beautify' to fix indentation levels.

Use the controls to convert to JSON if needed.

The guide

Input YAML

Output

Results will appear here...

YAML vs JSON

YAML is designed to be human-readable and is widely used for configuration files (Docker, Kubernetes, Home Assistant). JSON is stricter and better for machine-to-machine data exchange (APIs, Database storage).

Key Differences

Comments: YAML supports comments (#), JSON does not.
Syntax: YAML uses indentation (whitespace), JSON uses braces {}.
Strictness: YAML is more lenient with quotes, while JSON requires double quotes for all keys.