TypeScript interfaces are erased at compile time and cannot protect your app if an external API returns unexpected runtime data. Zod validates the payload at runtime and automatically infers the TypeScript type via `z.infer`.
Convert JSON to TypeScript & Zod Schemas
Generate clean TypeScript interfaces, type aliases, and runtime Zod validation schemas (`z.object`) from any JSON payload.
Loading studio workspace…
Popular Related Tools You Might Need Next
Convert JSON to TOON (Token-Oriented Object Notation)
Compress verbose JSON payloads into LLM-friendly Token-Oriented Object Notation to cut prompt token usage by up to 60%.
LLM Token Counter & API Cost Estimator
Measure exact token counts for prompts, JSON payloads, and code—and compare API pricing across Gemini, GPT, and Claude.
Online Semantic JSON Diff & Comparator
Compare two JSON payloads semantically—ignoring key order and formatting—to spot added, removed, and modified values.
100% Client-Side JWT Decoder & Validator
Decode JWT headers and payload claims, check expiration countdowns, and verify HMAC signatures 100% offline in your browser.
Key Capabilities
Engine Features & Specifications
Generate Strict TypeScript Interfaces & Types from Any JSON
Paste a raw API response to immediately infer nested `export interface` trees or `export type` aliases with optional `readonly` modifiers.
One-Click Runtime Validation with Zod Schema Inference
Switch to the Zod tab to generate matching `z.object(...)` validators complete with `export type Root = z.infer<typeof RootSchema>` so your static types and runtime validation never drift apart.
Smart Array Union Merging, Nullable Detection & String Formats
When you paste an array of objects, our inference engine merges all elements—automatically marking missing keys as `.optional()`, `null` values as `.nullable()`, and detecting ISO dates, UUIDs, emails, and URLs.
Common Inquiries
Frequently Asked Questions
Related Developer Tools
dev-utility
JSON to TOON Converter
Compress verbose JSON payloads into LLM-friendly Token-Oriented Object Notation to cut prompt token usage by up to 60%.
dev-utility
LLM Token Counter
Measure exact token counts for prompts, JSON payloads, and code—and compare API pricing across Gemini, GPT, and Claude.
dev-utility
JSON Diff & Compare
Compare two JSON payloads semantically—ignoring key order and formatting—to spot added, removed, and modified values.
dev-utility
Offline JWT Decoder
Decode JWT headers and payload claims, check expiration countdowns, and verify HMAC signatures 100% offline in your browser.