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Paste JSON, get a typed Zod schema — AI output validation ready.
import { z } from 'zod'
export const Schema = z.object({
"name": z.string(),
"born": z.number().int(),
"verified": z.boolean(),
"tags": z.array(z.string()),
"profile": z.object({
"era": z.string(),
"fields": z.array(z.string()),
}),
})
export type Schema = z.infer<typeof Schema>🧬 Integers become z.number().int(); mixed arrays emit z.union with up to 3 sample shapes; empty arrays fall back to z.unknown. Keys observed as null stay required-but-nullable — tighten .optional() by hand where APIs omit fields.
Structured-output APIs promise JSON; Zod verifies shape at runtime and gives you the TypeScript type for free via z.infer. This converter turns one example payload into that schema instantly.
Integers get .int(), nested objects nest z.object, arrays of mixed types produce z.union with up to three sample shapes. The export includes both the schema and the inferred type.
JSON samples cannot reveal optionality — a key present in your example becomes required. Add .optional() where APIs omit fields, and .nullable() stays where null actually appeared.
Pass zodResponseFormat(schema) (openai sdk) or feed the JSON Schema equivalent via structured outputs. Validation failures then surface as parse errors instead of silent shape bugs.
The JSON to Zod Schema handles json to zoddirectly in your browser. Paste or type your input, and the tool processes it instantly — no upload, no signup, no waiting. It's built for the moments when you need a quick transformation and don't want to leave your workflow.
Because the tool runs client-side, it's fast and private. Your text never touches a server, which makes it safe for sensitive content. The interface is keyboard-friendly and works on any device with a modern browser.
Common uses: people reach for this tool when they need to use a convert json to zod schema online, zod schema from json example, validate openai structured output zod, or zod object from json typescript.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
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