Convert JSON to
typed code, instantly.
Transform JSON into TypeScript interfaces, Zod schemas, Pydantic models, and YAML. Runs entirely in your browser.
All Tools
9 convertersFormatter & Validator
PopularFormat, validate, and minify JSON with structure analysis.
JSON to TypeScript
Convert JSON to TypeScript interfaces instantly. Generates clean, properly typed interfaces from any JSON structure.
JSON to Zod Schema
TrendingGenerate Zod validation schemas from JSON data. Creates runtime-validated TypeScript types with automatic format detection.
JSON to Pydantic
NewGenerate Python Pydantic v2 models from JSON. Creates type-safe Python data models with automatic field type inference.
JSON to YAML
Convert JSON to clean, readable YAML. Handles nested structures, arrays, multiline strings, and special characters.
JSON to CSV
Convert JSON arrays and objects to CSV format. Flattens nested structures with dot notation.
JSON to JSON Schema
NewGenerate JSON Schema from sample JSON data. Auto-detects formats like email, URL, date-time, and UUID.
JSON Diff & Compare
NewCompare two JSON objects and see exactly what changed — added, removed, and modified fields.
Base64 ↔ JSON
Decode Base64 to JSON or encode JSON to Base64. Debug JWT tokens and encoded API payloads.
Instant Conversion
Paste JSON, get typed code. TypeScript interfaces, Zod schemas, Pydantic models — one click away.
100% Private
All conversions run in your browser. Nothing is sent to any server. Safe for sensitive data.
Smart Detection
Auto-detects emails, URLs, UUIDs, and dates. Generates proper validation for each format.
More Coming
Prisma, Drizzle, Go structs, Rust serde, SQL, GraphQL — we're adding new targets regularly.
Frequently Asked Questions
What is JSONConvert?
JSONConvert is a free online tool that converts JSON data into typed code — TypeScript interfaces, Zod schemas, Pydantic models, and YAML. All processing happens in your browser, so your data stays private.
Is JSONConvert free to use?
Yes, JSONConvert is completely free with no signup required. There are no usage limits since all conversions run locally in your browser.
Is my data safe?
Absolutely. JSONConvert runs 100% client-side — your JSON is never sent to any server. You can even use it offline once the page is loaded.
What output formats are supported?
JSONConvert currently supports TypeScript interfaces, Zod validation schemas, Python Pydantic v2 models, and YAML. We also have a JSON formatter and validator. More formats like Prisma, Go structs, and Rust serde are coming soon.
Does it handle nested JSON objects?
Yes. Nested objects automatically generate separate interfaces or models. Arrays of objects are analyzed to produce proper typed arrays. The converter handles any level of nesting depth.
Can I use the converted code in production?
Yes. The generated TypeScript interfaces, Zod schemas, and Pydantic models are production-ready. The Zod converter auto-detects common patterns like emails, URLs, UUIDs, and ISO dates to add proper validation.