Data formatters

JSON to YAML Converter

Convert JSON objects and arrays into clean YAML locally in your browser.

Runs locally in your browser

Drop a JSON fileConverts JSON to YAML locally. Nothing is uploaded.

Choose file

JSONYAML

name: Lumio
private: true
tools:
  - JSON
  - YAML

How to use this tool

Paste or type your input into the tool panel. Results update immediately where possible. For privacy-first tools, your input is processed locally in the browser and is not stored for analytics.

FAQ

Is this tool free?

Yes. Lumio Utils starts with free browser-based tools and does not require registration.

Do you store my input?

No tool inputs, file contents, passwords, or private generated outputs are stored for analytics.