TypeMorph vs ts-json-schema-generator
Updated
ts-json-schema-generator converts TypeScript source code to JSON Schema Draft 7 — it reads your .ts files and extracts schemas from type annotations, which TypeMorph cannot do. TypeMorph goes the other direction: JSON, OpenAPI, or JSON Schema → 160+ output formats including TypeScript, Zod, Go, Rust, and Prisma. Use ts-json-schema-generator to generate JSON Schema from TypeScript; use TypeMorph to convert JSON/OpenAPI data into typed code.
ts-json-schema-generator is the go-to tool for extracting JSON Schema from TypeScript type definitions — useful for runtime validation, API documentation, and test generation. TypeMorph is for the reverse and lateral workflows: converting JSON responses or OpenAPI specs into typed code. They solve complementary problems and are often used together.
Use TypeMorph if
You have JSON data, an API response, or an OpenAPI spec and want to generate TypeScript interfaces, Zod schemas, Go structs, Prisma models, or 160+ other formats.
Try TypeMorph freeUse ts-json-schema-generator if
You have TypeScript source code with type annotations and want to generate JSON Schema from your existing types — for runtime validation, OpenAPI docs, or test data generation.
Visit ts-json-schema-generatorFeature Comparison
| Feature | TypeMorph | ts-json-schema-generator |
|---|---|---|
| TypeScript → JSON Schema | ||
| JSON → TypeScript | ||
| JSON → Zod v4 | ||
| JSON → Go / Rust / Python / Java | ||
| JSON → Prisma / Drizzle / SQL | ||
| OpenAPI → TypeScript / Zod | ||
| Reads TypeScript source files (.ts) | ||
| Supports TypeScript generics | ||
| Supports TypeScript utility types | ||
| Semantic format inference (email/uuid) | ||
| Schema Quality Score | ||
| Breaking Change Detector | ||
| Web UI (no install) | ||
| VS Code Extension | ||
| CLI tool (npm) | ||
| Free & open source |
Where TypeMorph stands out
- JSON, YAML, and OpenAPI as input — convert API responses and specs directly to typed code
- 160+ output formats from one input: TypeScript, Zod v4, Go, Rust, Prisma, SQL, MCP tool, and more
- Semantic format inference reads actual values: email → z.email(), uuid → z.uuid(), url → z.url()
- Web UI — paste any JSON and get TypeScript or Zod instantly without installing anything
- VS Code Extension — Ctrl+Shift+T to convert any file without leaving your editor
- Also generates TypeScript → JSON Schema (the same direction as ts-json-schema-generator, from JSON input)
Where ts-json-schema-generator stands out
- The definitive tool for TypeScript source → JSON Schema: reads .ts files and handles generics, utility types, and JSDoc annotations
- Supports complex TypeScript features (Partial<T>, Pick<T,K>, conditional types) that cannot be inferred from JSON alone
- Often used to generate JSON Schema for tRPC, Fastify, or OpenAPI docs from existing type definitions
- Deep TypeScript AST analysis — no false positives from value-based inference
Frequently asked
Can TypeMorph replace ts-json-schema-generator?
Not for TypeScript → JSON Schema extraction from .ts source files — ts-json-schema-generator is the right tool for that. TypeMorph covers the reverse: JSON/OpenAPI → TypeScript, Zod, Go, and 160+ other formats.
I have a JSON Schema from ts-json-schema-generator. Can TypeMorph use it?
Yes. TypeMorph accepts JSON Schema as input and converts it to TypeScript, Zod v4, Go, Rust, Prisma, and 160+ other formats. This is a common workflow: ts-json-schema-generator to extract the schema, TypeMorph to generate code in other languages.
What is the difference between JSON Schema and Zod?
JSON Schema is a language-agnostic standard for describing data shape. Zod is a TypeScript-first runtime validation library. TypeMorph can convert between them: JSON → JSON Schema, JSON Schema → Zod, and TypeScript → JSON Schema.
Does TypeMorph support TypeScript generics?
TypeMorph infers schema from values, not TypeScript source. It cannot resolve generics or utility types from .ts files. For that, use ts-json-schema-generator first, then feed the JSON Schema output into TypeMorph.