How to use the JSON to JSON Schema
- Paste your JSON into the input box, or open a file.
- The output updates automatically as you type.
- Copy the JSON Schema or download it as a file.
About JSON
JSON (JavaScript Object Notation) is the default data format of web APIs, package manifests and most configuration tooling. It supports objects, arrays, strings, numbers, booleans and null.
About JSON Schema
JSON Schema describes the shape of JSON data: its types, properties and required fields. It is used for validation, API contracts (OpenAPI) and editor autocompletion.
Private by design
Developer data is often sensitive: API responses, tokens, customer records, internal configs. This JSON to JSON Schema processes everything locally in your browser tab. There is no server round-trip, no logging and no storage of your input.
Frequently asked questions
Is this JSON to JSON Schema free?
Yes. This JSON to JSON Schema is completely free to use with no sign-up, no limits and no ads inside the tool.
Is my data uploaded to a server?
No. The JSON to JSON Schema runs entirely in your browser using JavaScript. Nothing you paste is sent to DevT Pro or any other server.
Does the JSON to JSON Schema conversion lose data?
The structure and values of your JSON are preserved. Formatting details such as comments are not carried over.
Can I use the JSON to JSON Schema offline?
Yes. JSON to JSON Schema is also built into DevT Pro, a native app for Mac, Windows, iPad and Linux with 120+ developer tools that work fully offline. It is a $5.99 one-time purchase with no subscription.
