Utilo

JSON Formatter & Converter

Free online JSON formatter, validator and minifier. Convert JSON to YAML, CSV and TypeScript interfaces, or YAML/CSV back to JSON — instantly and privately in your browser.

About the JSON Formatter & Converter

Free online JSON formatter, validator and minifier. Convert JSON to YAML, CSV and TypeScript interfaces, or YAML/CSV back to JSON — instantly and privately in your browser. It is part of Utilo, a collection of free developer utilities designed to be fast, accessible and beautiful on any device.

Is my data safe?

Yes. All processing happens directly in your browser using JavaScript, Web Workers and Web APIs. Nothing you type, paste or upload is sent to our servers.

Common uses

  • json formatter
  • json validator
  • json to yaml
  • json to csv
  • json to typescript