One document, or several samples as JSON Lines.
Options for Zod

Convert JSON to a Zod schema

Paste a JSON sample and get a Zod schema you can drop straight into your TypeScript project: z.object for objects, z.array for arrays, .optional() for fields some records lack, .nullable() where null appears, z.union for mixed values, and a z.infer type alongside. The sample is validated against the generated schema in the tests, so it always accepts the data it came from.

Choose strict, passthrough or the default strip for unknown keys, and whether the schema is exported. It runs entirely in your browser with no upload and no account.

Need a different language? See all JSON-to-code converters.

Other languages

JSON to TypeScript interfacesGenerate a JSON Schema from JSON

JSON to Zod Schema Converter — frequently asked questions

How do I generate a Zod schema from JSON?
Paste your JSON on the left and the exported Zod schema appears on the right, ready to import alongside zod, with a z.infer type of the same name. Set the name and copy it into your project.
What Zod types does it produce?
Objects map to z.object, arrays to z.array, strings, numbers (with .int() for integers) and booleans to their z types, nulls to .nullable(), fields missing from some records to .optional(), and mixed values to z.union.
Is my JSON uploaded anywhere?
No. Parsing and code generation run entirely in your browser with JavaScript — your JSON never leaves your device, so it's safe to paste API responses and other sensitive payloads. It's free with no sign-up.

Spotted a bug or have a suggestion?

Found something broken, have an idea, or just want to say thanks about any of our tools? Every message reaches a real person.