YAML to JSON Converter

YAML (YAML Ain't Markup Language) is a human-readable data serialization format that uses indentation instead of braces and brackets. It supports comments, multi-line strings, and anchors/aliases. JSON is more strict and machine-friendly. Both represent the same data structures — objects, arrays, strings, numbers, booleans, and null.

Yes — the tool works in both directions. Paste JSON to get properly indented YAML output, or paste YAML to get valid JSON. The conversion preserves all data types, nested structures, and array contents. Comments in YAML are lost during conversion since JSON does not support comments.

The tool handles YAML anchors (&anchor) and aliases (*anchor), multi-line strings (block scalars using | and >), complex keys, merge keys (<<), and multi-document files (separated by ---). Features without JSON equivalents are resolved during conversion.

Yes — the parser validates YAML syntax in real time and reports errors with line numbers. Common errors include inconsistent indentation, invalid characters, unclosed quotes, and mixing tabs with spaces. The error messages help you quickly locate and fix syntax problems.

Use YAML for configuration files (Docker Compose, Kubernetes, GitHub Actions, Ansible) where human readability and comments are important. Use JSON for API payloads, data exchange, and programmatic use where strict parsing and wide language support matter. YAML is more readable; JSON is more portable.