YAML Parser

Parse YAML and convert to JSON. Inspect the parsed structure of any YAML document.

YAML Input

Parsed Output

What Is a YAML Parser?

A YAML Parser reads a YAML document and converts it into a structured data representation. This tool parses your YAML and outputs the result as pretty-printed JSON, letting you inspect every value, type, and nesting level. It's useful for debugging YAML config files, verifying data types, and understanding the structure of complex documents.

This tool runs entirely in your browser using JavaScript. No data is sent to any server, making it safe to use with Kubernetes manifests, CI/CD configs, secrets, or any sensitive YAML content.

YAML Parsing Examples

Paste YAML and see the parsed JSON output. Type coercion is applied — numbers become numbers, booleans become booleans:

Example: Person record

YAML Input:

YAML Input

Parsed JSON output:

JSON View

How to Use This Tool

1

Paste or Upload YAML

Paste your YAML into the left editor or click Upload to load a .yaml or .yml file. The Sample button loads example data.

2

Inspect Parsed Output

The right panel shows your YAML parsed as JSON by default. Switch to YAML View to see the normalized YAML source. The JSON output shows the actual data types: numbers without quotes, true/false for booleans, null for null values.

3

Copy or Download

Use <strong>Copy</strong> to put the parsed JSON on your clipboard, or <strong>Download</strong> to save it. For a dedicated converter, see YAML to JSON.

Frequently Asked Questions

Is my YAML data private?

Yes. All parsing happens in your browser using JavaScript. No data is sent to any server. You can verify this in your browser's Network tab.

What is the difference between parsing and formatting YAML?

Parsing reads the YAML text and converts it into structured data (shown as JSON here). Formatting re-indents and normalizes the YAML text without changing the data. Use the YAML Formatter to reformat.

Why are some values in quotes in YAML but not in the JSON output?

YAML uses quotes optionally for strings. When parsed, values like 30 become JSON numbers, true becomes a JSON boolean, and quoted strings become JSON strings. The parser infers types from the YAML value syntax.

What YAML features are supported?

Basic key-value pairs, nested objects, lists, and scalar types (strings, numbers, booleans, null) are supported. Complex YAML features like anchors, aliases, and multi-document streams may not be fully parsed.

Can I use this to convert YAML to JSON?

The JSON output here is a quick parse view. For a full conversion tool, use YAML to JSON.

Related Tools

YAML Viewer YAML to JSON YAML Formatter YAML Validator JSON Formatter

For more on YAML, see the YAML 1.2 specification and yaml.org.