21 free tools
JSON Developer Tools
Convert, format, validate, and generate JSON code directly in your browser. Folioify tools are free, require no signup, and are designed for fast local developer workflows.
JSON to React PropTypes
Generate React PropTypes from JSON sample. Free, no signup, runs in browser. By Folioify.
JSON to Flow
Generate Flow type definitions from JSON. Free, in-browser, no signup. By Folioify.
JSON to GraphQL
Convert JSON sample to GraphQL schema. Free, no signup, runs in browser. By Folioify.
JSON to TypeScript
Generate TypeScript types from JSON. Free, no signup, runs in browser. By Folioify.
JSON to MobX-State-Tree Model
Convert JSON to MobX-State-Tree (MST) model. Free, in-browser, no signup. By Folioify.
JSON to Sarcastic
Generate Sarcastic runtime types from JSON. Free, no signup, runs in browser. By Folioify.
JSON to io-ts
Generate io-ts codec types from JSON. Free, in-browser, no signup. By Folioify.
JSON to Rust Serde
Convert JSON to Rust Serde structs. Free REPL, no signup, runs in browser. By Folioify.
JSON to Mongoose Schema
Convert JSON to Mongoose schema for Node.js. Free, in-browser, no signup. By Folioify.
JSON to Big Query Schema
Generate BigQuery table schema from JSON. Free, in-browser, no signup. By Folioify.
JSON to MySQL
Convert JSON to MySQL CREATE TABLE schema. Free, no signup, runs in browser. By Folioify.
JSON to Scala Case Class
Generate Scala case class from JSON. Free, in-browser, no signup. By Folioify.
JSON to Go Struct
Convert JSON to Go struct. Free, no signup, runs in browser. By Folioify.
JSON to Go Bson
Generate Go BSON struct tags from JSON. Free, in-browser, no signup. By Folioify.
JSON to YAML
Convert JSON to YAML. Free, no signup, runs in browser. By Folioify.
JSON to JSDoc
Generate JSDoc type comments from JSON. Free, in-browser, no signup. By Folioify.
JSON to Kotlin
Generate Kotlin data class from JSON. Free, no signup, runs in browser. By Folioify.
JSON to Java
Generate Java class from JSON. Free, in-browser, no signup. By Folioify.
JSON to JSON Schema
Infer JSON Schema from JSON sample. Free, no signup, runs in browser. By Folioify.
JSON to TOML
Convert JSON to TOML config format. Free, in-browser, no signup. By Folioify.
JSON to Zod Schema
Generate Zod schema from JSON. Free, no signup, runs in browser. By Folioify.
Why use these JSON tools?
These tools focus on quick transformations and validation tasks that developers repeat during implementation, debugging, documentation, and migration work.
Are uploads required?
No. Tools run in the browser whenever possible, so code snippets stay on your device and can be copied out immediately.