FastDevTool

YAML to JSON Converter

Convert YAML configuration files to JSON format. Free online YAML to JSON converter.

Converting YAML Configuration to JSON

YAML to JSON conversion is useful when you need to pass configuration data to APIs, store settings in databases, or use YAML-defined data in JSON-only contexts.

Common scenarios include exporting Kubernetes manifests to JSON for programmatic processing, converting Docker Compose definitions for analysis, and migrating configuration between tools that prefer different formats.

YAML Indentation Rules

YAML uses indentation to define structure. Each level of nesting adds two spaces (or a consistent number of spaces). Mixing tabs and spaces causes parse errors — YAML requires spaces only.

When converting YAML with complex indentation, ensure your YAML uses consistent 2-space or 4-space indentation throughout the file. This converter normalizes indentation during processing.

Related Tools

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YAML Formatter
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TOML to JSON
Convert TOML to JSON

Frequently Asked Questions

What YAML features are supported?

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This converter supports basic YAML key-value pairs, nested objects (indented blocks), arrays (- list items), and simple scalars including strings, numbers, booleans, and null.

Are YAML comments preserved?

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No. Comments in YAML (lines starting with #) are not represented in JSON and are stripped during conversion.

What about YAML anchors and aliases?

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Basic YAML anchors (&) and aliases (*) are not currently supported by this converter. For complex YAML, consider using a full YAML library.