YAML Formatter & Beautifier

YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It is commonly used for configuration files, data exchange between languages, and defining structured data. YAML is designed to be easy to read and write for humans, while also being machine-parseable.

YAML supports many features that make it more expressive than JSON for configuration:

• Comments — Lines starting with # are ignored
• Multi-line strings — Using | (literal) or > (folded) block scalars
• Anchors & Aliases — Reuse nodes with &anchor and *alias
• Tags — Explicit type declarations with !!str, !!int, etc.
• Multiple documents — Separate documents with ---

1. Paste your YAML or JSON — Enter YAML data to format/minify/validate, or paste JSON to convert to YAML. Use the Example link to load sample data.
2. Choose indentation — Select 2 or 4 spaces from the dropdown before formatting.
3. Format or Minify — Click Format YAML to beautify with proper indentation, or Minify for a compact representation.
4. Validate — Click Validate to check for syntax errors with detailed line/column information.
5. Convert format — Click → JSON to convert YAML to JSON, or → YAML to convert JSON to YAML.
6. Copy or download — Use the copy button on the output area or click Download to save the result.