Inference rulesNested objects become separate schemas; integers use v.pipe with v.integer(); missing fields are wrapped in v.optional(), nullable values in v.nullable(); mixed types become v.union.Runs locally — no fixed size limit (bounded by browser memory)

Sample JSONJSON

Paste or type JSON

Generated schemaValibot

Paste or type JSON

JSON → Valibot schema · runs locally · no upload

JSON to Valibot Schema Generator

Sample JSON → v.object · nested schemas · optional & nullable · InferOutput types

🔒Your data is processed locally in the browser — never uploaded, never stored

No upload, no storage

JSON is processed in memory and never sent to a server.

Share via URL fragment

Share links encode data in the # anchor — never sent to a server.

Remember last edit

Optionally keep your last input locally; clear it with one click.

Why generate Valibot schemas from JSON

Generate v.object schemas

Nested objects split into their own schemas, emitted in the functional style Valibot expects.

The bundle-friendly Zod alternative

Valibot is modular and tree-shakable — a fit for front ends on a tight byte budget.

Integer and nullable checks

Integers go through v.pipe with v.integer(); nullable values are wrapped in v.nullable().

Inferred types included

Every schema exports an InferOutput type, keeping validation and types aligned.

Runs locally — no upload

Generation happens entirely in your browser. Nothing is uploaded or stored.