YAML to JSON Converter
Convert YAML data to JSON format instantly. Supports nested objects, arrays, and multi-level structures. Output as pretty-printed or minified JSON. 100% client-side and free.
How to Use YAML to JSON Converter
How to Use the YAML to JSON Converter
Step 1: Paste Your YAML
Paste or type your YAML into the input field. The tool accepts any valid YAML — mappings, sequences, nested structures, or mixed types.
Step 2: Choose Output Format
- Pretty — outputs indented, human-readable JSON with 2-space indentation
- Minified — outputs compact single-line JSON, ideal for APIs or storage
Step 3: Convert
Conversion happens in real time as you type. Use the example buttons to load sample YAML structures.
Step 4: Copy or Download
Click Copy JSON to copy to clipboard, or Download .json to save as a file.
Supported YAML Structures
- Mappings — become JSON objects (
{ "key": "value" }) - Sequences — become JSON arrays (
[...]) - Scalars — strings, numbers, booleans, and null are mapped to their JSON equivalents
- Nested structures — fully supported at any depth
Tips
- Invalid YAML will show a clear error message with the parser's description
- The tool works entirely in your browser — safe for config files with secrets
Frequently Asked Questions
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