JSON & Data

JSON to TypeScript

Turn JSON into types and interfaces, including nested data.

JSON input

Root type nameJSON data

{"user":{"id":1,"name":"Alex","active":true}}

Your result will appear here.

Paste a JSON sample, set a root type name, and generate a TypeScript declaration.

Paste {"user":{"id":1,"active":true}} to create nested property types.

Beautify, minify, and validate JSON with useful errors.

Convert arrays of objects into spreadsheet-ready CSV.

Find values that were added, removed, or changed.