JSON to TypeScript Generator
Instantly convert complex or nested JSON objects into clean, fully-typed TypeScript interface definitions or type aliases. Fine-tune production exports with customizable root name overrides, optional keys, readonly properties, custom indent sizing, and inline nesting or separated definitions.
How to Generate TypeScript Interfaces
- Paste your configuration metrics or dictionary schema JSON into the input panels.
- Specify typing settings (e.g. prefix types, optional interfaces, nested structures).
- Download or copy your cleanly declared interfaces module directly.
Key Features
- Type inference engine: Automatically scans and assigns correct type definitions.
- Interface grouping: Merges identical recurring schemas into sub-interfaces.
- Optional parameter flags: Gracefully tags null values as options.
Common Use Cases
- Mock structure models to interact with third-party web configurations.
- Structure high-fidelity type systems for React, Angular, or Vue app components.
- Compile raw data sequences into type-safe code layers.
Frequently Asked Questions
Does this generator compile my JSON objects on external servers?
No. All JSON schemas and key-value entries are parsed and matched recursively right within your browser sandbox using pure client-side JavaScript. Your structure and values are never uploaded to any remote storage.
What is the difference between Separated and Nested structures here?
Separated structure parses each nested JSON object into its own unique, top-level typed interface (e.g. export interface Profile) and references it appropriately, whereas Nested structure inlines all child definitions inside the parent structure itself in a single contiguous block.
How are conflicting properties or heterogeneous array schemas handled?
When a field contains an array of objects with different shapes, the system automatically analyzes and merges properties from representing models to form a comprehensive unified schema containing all keys.