JSON Convert Tools

YAML to JSON Converter

Convert a single YAML document into JSON using the JSON schema.

Local processing

Drop a file here, or paste your data. Maximum 10 MB. Text files must use UTF-8.

Ready when you are.

Your data is processed in your browser and is not stored on our servers.

JSON numbers use JavaScript precision. Quote large identifiers to preserve their digits. Duplicate object keys keep the last value.

What is YAML to JSON Converter?

Convert a single YAML document into JSON using the JSON schema.

A single YAML document is read with the JSON schema. Mappings become objects and sequences become arrays. Only values representable in JSON are accepted.

Why use YAML to JSON Converter?

Use this tool to inspect a small dataset or prepare data for another application without installing software. Processing takes place in this browser. No account is required.

How to use YAML to JSON Converter

  1. Paste your input, upload a file, or load Sample Data.
  2. Choose any applicable options and select Convert.
  3. Review the output, then copy or download it.

Example

Input

name: Ada
roles:
  - editor
  - reader

Output

{"name":"Ada","roles":["editor","reader"]}

Common problems

Custom tags, multiple documents, cyclic aliases, non-finite numbers and duplicate keys are rejected. YAML comments and anchor syntax are not retained in JSON.

Frequently asked questions

Is my conversion data uploaded?

No. Conversion inputs and outputs remain in this browser. Contact form messages are handled separately by WordPress.

Can I process large files?

The default limit is 10 MB. Browser memory and data complexity can impose lower practical limits.

Do I need an account?

No account is needed to use this tool.

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