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Open toolJSON Schema to TypeScript Converter
Generate TypeScript definitions from a local JSON Schema. Structural types and internal definitions become source code; runtime validation rules still need a validator.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Generate TypeScript.
Your result
Enter your details
Result will appear here
How JSON Schema to TypeScript Converter works
Read structural schema types, properties, unions and internal definitions with quicktype.
Processing uses bundled libraries in this browser. The download contains the generated source or document, rather than a link to a conversion service.
How to generate TypeScript
Start with the supported input, then check the generated result.
Enter the source details
Use JSON Schema, Root type name. The form starts with an example you can replace.
Input and settings
Tool result
Review and save the output
Review TypeScript definitions from a local JSON Schema. Download the generated file and check it in the application where you plan to use it.
Review the details
When to use JSON Schema to TypeScript Converter
These workflows use the formats and behavior supported by this implementation.
Draft types from a schema
Reuse a local schema’s property and structural type information as a starting point for TypeScript definitions.
Reuse internal schema definitions
Internal definitions can be referenced within the supplied schema. Remote references are rejected instead of being fetched.
Separate types from runtime checks
TypeScript types do not check patterns, numeric ranges or string formats at runtime. Keep a schema validator where those rules matter.
What the output contains
Keep the output format and conversion policy in view.
TypeScript definitions from a local JSON Schema. Read structural schema types, properties, unions and internal definitions with quicktype.
Compare the result with the original before replacing a source file. Conversion limits are listed below.
Supported input and limits
Check these conditions before relying on the result.
Remote references are rejected. TypeScript definitions do not enforce runtime constraints such as string patterns, ranges or formats. Review unsupported schema constructs and compile in your project.
Input and results are not stored after leaving or reloading. Keep the original and download any output you need.
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Open toolGenerate TypeScript with your input
Generate the supported output, review it, and save a copy for your next step.
JSON Schema to TypeScript Converter: common questions
Answers about using JSON Schema to TypeScript Converter and understanding its results.
What does this tool produce?
It produces TypeScript definitions from a local JSON Schema. Remote references are rejected. TypeScript definitions do not enforce runtime constraints such as string patterns, ranges or formats. Review unsupported schema constructs and compile in your project.
Is my input uploaded?
Processing runs in this browser with local bundled libraries. No input is sent to a conversion server. Download your result before leaving the page.