Browser-only TypeScript tools for Zod, JSON Schema, OpenAPI, and Next.js workflows
Open focused developer tools for schema conversion, Zod validation, OpenAPI validators, Next.js metadata, and TypeScript config starters in a privacy-first workspace built for API validation workflows.
Live TypeScript tools
Zod to JSON Schema Converter
Use a free browser-only online converter to turn Zod 4 schemas into JSON Schema for Draft 2020-12, Draft 7, AJV, or OpenAPI-compatible output.
LiveJSON to Zod Converter
Convert JSON to Zod schemas with strict objects, optional field inference, and inferred TypeScript types.
LiveTypeScript to Zod Converter
Convert TypeScript interfaces and type aliases into Zod schemas with inferred types in your browser.
LivePrisma to Zod
Generate Zod validation starters from Prisma model definitions and enum fields.
LiveOpenAPI to Zod
Turn OpenAPI schemas into Zod validators and lightweight typed fetch clients.
LiveJSON Schema to Zod
Convert a JSON Schema document into Zod validators and inferred TypeScript types in your browser.
LiveGraphQL to Zod
Generate Zod validation starters from GraphQL type definitions, inputs, enums, and scalars.
LiveNext Route Map
Paste an app directory tree and inspect routes, dynamic params, and route handler coverage.
LiveTailwind to CSS
Convert Tailwind classes to readable CSS instantly with local diagnostics and copy-ready output.
LiveNext Metadata Generator
Generate typed Next.js metadata, Open Graph fields, Twitter cards, and JSON-LD starters.
Livetsconfig Builder
Build sane TypeScript compiler presets for Next.js, Vite, libraries, Node, and monorepos.
Built around developer workflows
Portable schema conversion
Open focused converters for Zod, JSON Schema, OpenAPI, and validator-ready contracts without uploading project code.
Zod validation from real payloads
Start with JSON samples from APIs, forms, or fixtures, then copy Zod schemas and inferred TypeScript types into your app boundary.
Runtime schemas from TypeScript types
Convert interfaces and type aliases into Zod schema starters when your static DTOs need browser-only runtime validation.
OpenAPI and Swagger to runtime guards
Convert API contracts into validators that make external responses safer before they reach React, Next.js, or service code.
Next.js launch hygiene
Generate metadata and tsconfig starters that keep App Router pages, social previews, and TypeScript defaults consistent.
Guides and examples
Zod safeParse
Validate unknown data without throwing, narrow result types, and format safeParse errors in TypeScript.
Zod refine vs superRefine
Add custom validation, async checks, password confirmation, and field-level error paths to Zod schemas.
Zod nativeEnum in Zod 4
Migrate z.nativeEnum usage to z.enum and validate TypeScript enum values without runtime drift.
Zod to TypeScript
Use z.infer, z.input, z.output, and zod-to-ts when Zod schemas own the TypeScript contract.
Fastify Zod validation
Use Zod schemas with Fastify request validation, response schemas, type providers, and OpenAPI output.
OpenAPI to Zod validation
Generate Zod validators from OpenAPI components and validate request, response, webhook, and fetch boundaries.
Fix nullable OpenAPI Zod errors
Debug parse failures when nullable, optional, OpenAPI 3.0, and OpenAPI 3.1 schema output drift.
FrameworkKit vs OpenAPI generators
Compare browser conversion with openapi-zod-client, Orval, and Kubb before adding repository codegen.
zod-prisma vs zod-prisma-types
Compare an online Prisma to Zod converter with repository generators for Prisma Zod schemas.
Next.js App Router route map
Map pages, route handlers, route groups, dynamic params, and typed route hints for PR review.
moduleResolution bundler vs node16
Choose TypeScript module resolution for Next.js, Vite, Node ESM, libraries, and monorepos.
Browse all guides
See every FrameworkKit guide on Zod, JSON Schema, OpenAPI, TypeScript config, and Next.js metadata.
Privacy-first by default
Runs locally
Core input and generated output stay in your browser during the current FrameworkKit workflows.
Tool-first pages
Open a route and start typing immediately. Explanations, FAQs, and internal links stay below the workspace.
Copy and share ready
Use the header actions to copy generated code or share a reproducible sample link with teammates.
FAQ
What is FrameworkKit?
FrameworkKit is a browser-only workspace for TypeScript developers who need Zod schemas, OpenAPI validators, Next.js metadata, and config starters without sending project data to a backend.
Are the tools free to use?
Yes. The current tools are free, web-based, and designed for quick copy-ready TypeScript output.
Which FrameworkKit tool should I start with?
Start with the Zod to JSON Schema Converter for portable contracts, JSON to Zod for sample payloads, TypeScript to Zod for interfaces and type aliases, OpenAPI to Zod for API contracts, Next Metadata Generator for App Router SEO fields, and tsconfig Builder for project presets.