UUUP Tools

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JSON to YAML Converter Online

Convert JSON to YAML in your browser with 2- or 4-space indentation. Invalid input shows an error, and conversion stays on the page—useful for config migration, API samples, and more readable archives.

Quick switch→YAML to JSON
JSONYAMLConverter
Quick switch:YAML to JSONJSON FormatterYAML Validator

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Use cases

  • Rewrite JSON config as YAML deployment files
  • Make API samples easier to read by hand
  • Move data between JSON and YAML workflows

How to use

  1. Paste valid JSON
  2. Choose indentation and convert
  3. Copy the YAML result

Example input and output

JSON input

{"name":"uuup","stack":["astro","cloudflare"]}

YAML output

name: uuup
stack:
  - astro
  - cloudflare

FAQ

Does it validate JSON first?

Yes. Invalid JSON shows an error and does not produce a partial YAML result.

Can I change indentation?

Yes. Choose 2-space or 4-space indent to match your reading or team style.

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