Developer Tools
JSON to TypeScript
Convert pasted JSON into a TypeScript type or interface locally in your browser.
Generated type or interface
export interface ClearUtilsTool {
id: number;
name: string;
active: boolean;
tags: string[];
owner: { email: string };
}JSON to TypeScript workflow tips
Use this converter for quick type scaffolding from small API responses, fixtures, examples, and docs. It is intentionally lightweight, so generated types should be reviewed before production use.
Validate first
If the input fails, run it through JSON Validator or JSON Formatter before converting.
Use for scaffolding
Generated types are a starting point for developers. Rename fields, split nested interfaces, and refine unions in your editor as needed.
Keep examples small
Paste representative samples rather than confidential or huge payloads. This browser-local tool works best for lightweight snippets.
What this tool does
Infers basic TypeScript shapes from JSON objects, arrays, strings, numbers, booleans, nulls, nested objects, and repeated array item shapes for quick developer scaffolding.
Common use cases
Generate quick TypeScript type scaffolds from pasted JSON API responses, fixtures, configs, and examples.
Use JSON to TypeScript when you are working with copied API payloads, logs, encoded values, config snippets, identifiers, or debugging data and need a quick browser-local check before pasting the result into docs, tickets, tests, or another developer tool.
How to use it
- Paste valid JSON from an API response, fixture, config, or log.
- Choose a type/interface name for the generated TypeScript.
- Copy the generated output into your codebase, docs, tests, or issue notes and refine as needed.
Example workflow
Copy a small payload or encoded value from an API response, request URL, log line, or config file. Run the focused check here, confirm the output is readable, then continue with related developer data tools such as validation, formatting, decoding, timestamp conversion, or CSV/JSON conversion.
Privacy note
JSON to TypeScript conversion runs locally in your browser. ClearUtils does not upload, store, or transmit pasted JSON.
FAQ
Does this upload my JSON?
No. JSON to TypeScript conversion runs locally in your browser and does not send pasted JSON to ClearUtils servers.
Are generated types production-ready?
They are useful scaffolds from sample JSON. Review names, unions, optional fields, nested models, and edge cases before using them in production.
Can it handle arrays?
Yes. It infers array item shapes and merges repeated object fields into a practical TypeScript shape.
Explore more tools
Browse the Developer Tools hub or continue with the Developer Data Toolkit when this task is part of a larger workflow.