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JSON to YAML Converter Online

Convert JSON into readable YAML while preserving the meaning of strings, nulls and multi-line values. Tune formatting for a human-reviewed config, then validate it in the system that will consume it.

Direct answer

A JSON-to-YAML converter rewrites the same data model in YAML syntax. Indentation, scalar quoting, null representation and block-string style affect readability and—in ambiguous cases—how a parser interprets values.

Convert the JSON, inspect ambiguous scalars and validate the YAML in its destination.

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Input JSON

Example JSON loaded.
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Output YAML

1service: appkiro-api2version: 1.4.23release:4  stage: production5  date: 2024-03-186  approved: true7regions:8  - us-east-19  - ap-southeast-110  - eu-west-111limits:12  requestsPerMinute: 60013  burst: null14owners:15  - name: Alice Johnson16    email: [email protected]17  - name: Bob Smith18    email: [email protected]19notes: |-20  Multi-line21  ready for k8s configmaps22

How to use it

  1. Paste/upload JSON or fetch a supported public URL.
  2. Choose indentation, null and quote styles, multi-line blocks, document marker and key sorting.
  3. Review the YAML and copy or download it for validation in the target project.

Key features and settings

  • Configurable indentation and key order.
  • Explicit, tilde or empty-style null output.
  • Automatic, single or double quoting for scalar safety.
  • Literal blocks for multi-line strings and optional --- document marker.

Supported input and output

Input: JSON text or file, a supported public URL. Output: YAML text or file.

Use cases

  • Move API/config data into a YAML-based repository.
  • Prepare readable deployment or automation configuration.
  • Normalize key order and scalar formatting for cleaner code review diffs.

Which workflow should you choose?

Use JSON to YAML Converter for: Configurable indentation and key order. Use YAML to XML Converter for: Custom root and array-item element names.

Privacy and data path

In the current implementation, pasted/uploaded content is processed in the browser, while “Extract from URL” uses a server-side proxy to fetch the source.

Limits and troubleshooting

  • Quote IDs, version strings and values such as yes, no, dates or leading-zero numbers when type preservation matters.
  • Do not promise universal compatibility; run the result through the actual YAML parser and application schema.
  • The current UI displays a 5 MB input limit.

FAQ

Why did the converter quote a value?

Auto-quoting protects strings that could otherwise be parsed as numbers, booleans, nulls, dates or YAML syntax.

Is my data uploaded to a server?

In the current implementation, pasted/uploaded content is processed in the browser, while “Extract from URL” uses a server-side proxy to fetch the source.

What are the file or data limits?

The current UI displays a 5 MB input limit.

Does it work on mobile?

The page is web-based and may work in a modern mobile browser, but file-picker behavior, memory and cross-device compatibility are not verified for every device. Use a desktop browser for large or complex inputs.

Which workflow should you choose?

Use JSON to YAML Converter for: Configurable indentation and key order. Use YAML to XML Converter for: Custom root and array-item element names.

Related tools

YAML to XML ConverterTransform YAML mappings and arrays into an XML tree.JSON to XML ConverterConvert JSON objects/arrays to XML with custom root and item names.JSON Formatter OnlineFormat and validate JSON before conversion, or inspect the result afterward.

Convert the JSON, inspect ambiguous scalars and validate the YAML in its destination.