JSONConvert

What it does

Free online JSON converter. Transform JSON to TypeScript interfaces, Zod schemas, Pydantic models, YAML, and more. 100% client-side, your data never leaves your browser.

Free JSON tools online: convert to TypeScript, Zod, Pydantic, Go, YAML, CSV and more. Format, validate, diff. 100% client-side, no signup.

TypeScript, Zod, Pydantic, Go, and 28 more formats. Paste JSON, get code. Everything stays in your browser. { "name" : "Ada" , "email" : "[email protected]" , "age" : 30 , "active" : true } Output interface User { name : string ; email : string ; age : number ; active : boolean ; } No data leaves your browser Real-time conversion Free forever 32 tools 32 tools, one workspace Code generators, format converters, and utilities - everything you need for JSON. No bloat, no accounts, no server calls. Just fast, reliable JSON tools. Output updates as you type. No convert button, no spinners, no waiting. Automatically fixes trailing commas, missing quotes, and common JSON issues. Share conversions via…from jsonconvert.dev

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