# Beste UI

> Beautiful, accessible blocks, pieces and components for shadcn/ui and Tailwind CSS, built for React and Next.js. Install one with the shadcn CLI and the code is yours to edit: no runtime dependency, nothing to upgrade.

Markdown rendition of https://ui.beste.co/tools/json-to-zod. Every page on the site has one: add `.md` to any address, or send `Accept: text/markdown`.

Whole catalog for LLMs: https://ui.beste.co/llms.txt. Registry index: https://ui.beste.co/r/registry.json

---
[tools](/tools)/[converters](/tools/category/converters)

# JSON to Zod schema

Paste a JSON payload and get a Zod v4 schema with the inferred TypeScript type, ready for a form resolver or an API route.

Type name

Detect string formats

JSONjson0

Load sampleClear

Zod schemats

The result appears here

Copy outputDownload

[Made something you like?Forms that consume this schema](/blocks/form)

## Questions

Which Zod version does the output target?+

Zod v4\. With format detection on it uses the top level helpers z.email(), z.url(), z.uuid() and z.iso.datetime(). Turn detection off and the output is plain z.string(), z.number() and z.object(), which also runs on Zod v3.

How are nulls, empty arrays and missing keys handled?+

A null becomes z.null(), because one sample cannot tell you what else the field holds. Inside an array the null merges with its siblings into .nullable(). An empty array becomes z.array(z.unknown()). A key present in some array elements but not others comes out .optional().

Does it accept JavaScript objects, not just strict JSON?+

Yes. Unquoted keys, single quotes, trailing commas, // and /\* \*/ comments, and undefined or NaN as values are all accepted: paste an object straight out of a source file or a console log. Strict JSON is tried first, and the relaxed reading only runs if that fails.

Is my payload uploaded anywhere?+

No. The parser and the code generator run in your browser. Nothing is sent to a server, which is why the tool also works offline once the page is loaded.

## Related tools

[JSON formatter and validatorFormat, validate, sort or minify JSON. Unquoted keys, trailing commas and comments are accepted, so a pasted console log works as well as a strict file.](/tools/json-formatter)[Base64 encoder and decoderEncode text to base64 or decode it back, with UTF-8 handled correctly and a URL-safe variant for tokens and query strings.](/tools/base64)[CSS to JS objectConvert CSS rules or a bare declaration list into JavaScript style objects, camelCased and quoted, ready for a style prop or a CSS-in-JS file.](/tools/css-to-js)

Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · Ship it · 

## The tools are free. So is most of the library.

1935 blocks and 989 pieces for shadcn/ui and Tailwind, built on the same tokens these tools write. Install one with a command and the code is yours.

[Browse the blocksBrowse the blocks](/blocks)

No signup for the tools. MIT for free blocks, commercial licence for Pro.

## Ship the interface, keep the code.

New blocks, pieces and components every week. Install one with a command and it is yours to edit. No runtime dependency, no upgrade path to fight.

[Browse the libraryBrowse the library](/blocks)[See pricingSee pricing](/pricing)

### Library

* [Blocks](/blocks)
* [Pages](/pages)
* [Pieces](/pieces)
* [Components](/components)
* [Search](/search)

### Learn

* [Docs](/docs)
* [AI & MCP](/docs/mcp)
* [Blog](/blog)
* [Free tools](/tools)
* [What's new?](/changelog)
* [Website Builder](https://beste.co)

### More

* [Pricing](/pricing)
* [Referrals](/referrals)
* [License](/license)
* [GitHub](https://github.com/beste-co/beste-ui)

### Shadcn Blocks

* [Shadcn Hero Blocks](/blocks/hero)
* [Shadcn Feature Blocks](/blocks/feature)
* [Shadcn Pricing Blocks](/blocks/pricing)
* [Shadcn CTA Blocks](/blocks/cta)
* [Shadcn FAQ Blocks](/blocks/faq)
* [Shadcn About Blocks](/blocks/about)
* [Shadcn Stats Blocks](/blocks/stats)
* [Shadcn Footer Blocks](/blocks/footer)
* [Shadcn Navigation Blocks](/blocks/navigation)
* [Shadcn Auth Blocks](/blocks/auth)
* [Shadcn Ecommerce Blocks](/blocks/ecommerce)
* [Shadcn Portfolio Blocks](/blocks/portfolio)
* [Shadcn Showcase Blocks](/blocks/showcase)
* [Shadcn Careers Blocks](/blocks/careers)
* [Shadcn Onboarding Blocks](/blocks/onboarding)
* [Shadcn Coming Soon Blocks](/blocks/coming-soon)
* [Shadcn Post Blocks](/blocks/post)
* [Shadcn Legal Blocks](/blocks/legal)
* [Shadcn Workflow Blocks](/blocks/workflow)
* [Shadcn News Blocks](/blocks/news)

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