Does it handle nested objects?

Yes, it recursively generates interfaces for nested objects.

JSON to TypeScript

Free online JSON to TypeScript Converter. Instantly generate TypeScript interfaces or types from your JSON objects. Simplifies API typing.

100% Private (In-Browser)Instant Web Worker SpeedZero Server Upload

JSON to TypeScript by Privacy-First Toolbox is a 100% free, client-side browser utility. It processes your files locally on your computer or smartphone using HTML5 and Web Workers—zero bytes of your files or data are ever uploaded to any external server.

Options

Root Name

Use Type Alias

JSON Input

TypeScript Output

Key Features

Generate TypeScript Interfaces or Types
Auto-detect nested objects
Auto-detect array types
Custom Root Name

Common Use Cases

Generating API response types
Typing legacy JSON data
Quick scaffolding

Frequently Asked Questions

More JSON Tools

Other private client-side utilities in this collection.

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JSON Formatter

Beautify, minify, and validate JSON

JSON Comparison

Compare two JSON objects and highlight differences

JSON to CSV

Convert JSON array to CSV

CSV to JSON

Convert CSV to JSON array

JSON to YAML

Convert JSON to YAML format

YAML to JSON

Convert YAML to JSON format

JSONPath Tester

Test and evaluate JSONPath expressions online

JSON to XML

Convert JSON to XML format online

XML to JSON

Convert XML to JSON format online

JSON to SQL

Convert JSON to SQL INSERT and CREATE TABLE statements

JSON Validator & Fixer

Validate JSON syntax and auto-fix formatting errors

JSON to JSON Schema

Generate JSON Schema from sample JSON

JSON Viewer

Interactive JSON Tree Visualizer & Explorer

JSON Minifier

Compress and minify JSON to reduce payload size

JSON Unescape & Stringify

Unescape stringified JSON or escape JSON into code literals

JSON Sorter

Sort and alphabetize JSON keys recursively