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YAML to JSON converter

Convert YAML to JSON format online instantly. Paste your YAML configuration and get valid, formatted JSON output. Supports all YAML features including anchors, aliases, and multi-line strings.

How to Use

  1. Step 1: Paste your YAML content into the left editor.
  2. Step 2: The JSON equivalent is generated in real-time.
  3. Step 3: Copy or download the JSON output.

Frequently Asked Questions

Why convert YAML to JSON?

JSON is more widely supported as an API data format. Converting YAML config to JSON makes it portable.

Are YAML comments preserved in JSON?

No. JSON does not support comments so all YAML comments are discarded during conversion.

What are the main differences between YAML and JSON?

YAML uses indentation for nesting, supports comments (#), multiline strings, and anchors/aliases. JSON uses braces and brackets, has a stricter syntax, and is faster to parse. YAML 1.2 is a superset of JSON. YAML is preferred for human-maintained config files; JSON is preferred for API data exchange.

How are YAML anchors and aliases handled in JSON?

YAML supports anchors (&anchor) and aliases (*alias) for reusing configuration fragments — a feature JSON lacks. When converting to JSON, aliases are expanded (inlined), generating fully repeated data. This means the resulting JSON is more verbose than the YAML and loses the original maintainability advantage. If JSON also needs to support reuse, handle it at the application layer (e.g., JSON Schema's $ref).