TypeScript ↔ JSON Schema Converter
Translate your TypeScript model interfaces into JSON Schema draft validation templates, or parse JSON schemas back into type-safe declarations.
Bridging Type Systems and Validation Layers
TypeScript interfaces are compile-time validation rules that help prevent runtime errors in your application code. However, they do not exist once the code is compiled to JavaScript. To validate data at runtime (e.g. from user input or external APIs), developers use JSON Schema.
Our online converter bridges this gap, allowing you to convert definitions between both formats instantly without writing schemas manually.
Frequently Asked Questions
How does the converter translate TypeScript interfaces?
It parses the interface declaration body using regular expressions, extracting variable names and mapping their types (e.g., string, number, array) to standard JSON Schema property definitions.
Can I convert JSON Schema back to a TypeScript interface?
Yes! Use the switch button in the control panel to change direction, allowing you to convert JSON schemas back into TypeScript type definitions.
Is this conversion secure?
Yes. The parsing and formatting logic runs 100% locally in your web browser, ensuring your type definitions and keys remain completely private.