Developer workflow
JSON formatter and JSON to TypeScript tools
Clean up an API response, find invalid JSON, and turn a sample payload into TypeScript interfaces without opening a desktop editor. These browser-based tools keep the workflow focused and do not require an upload.
Private by default
The developer tools run in the browser and do not need a file upload.
Format and validate
Turn a dense response into readable JSON and catch syntax errors.
Generate types
Use a representative JSON payload to create a TypeScript interface draft.
A practical JSON debugging workflow
- Paste the response or configuration into the JSON formatter.
- Format the document and read the validation message before changing values.
- Use the formatted object to identify nested arrays, optional fields, and timestamps.
- Send a representative sample to the JSON to TypeScript converter.
- Review generated names and optional properties before adding the types to your project.
Example JSON payload
{
"user": {
"id": 42,
"name": "Ada",
"roles": ["admin", "editor"]
},
"active": true
}Formatting makes nested objects and arrays easier to inspect before you write a parser or a type definition.
TypeScript interface draft
interface Root {
user: User;
active: boolean;
}
interface User {
id: number;
name: string;
roles: string[];
}Treat generated types as a starting point. Rename fields, mark optional properties, and split shared models when the API contract becomes stable.
Common problems this workflow solves
Minified API responses
Format a one-line response so nested data and missing commas are visible.
Unexpected JSON syntax
Validate a payload before sending it to an API client or configuration loader.
Unknown response shapes
Inspect arrays and nested objects before deciding how to type them.
Mixed developer formats
Use the XML and YAML formatters when the project uses more than JSON.
Developer tools in this workflow
JSON Formatter & Validator
Format, validate, minify, and sort JSON data without sending it to a server.
JSON to TypeScript
Generate readable TypeScript interfaces from a JSON example in one click.
XML Formatter & Validator
Validate, format, and minify XML documents directly in the browser.
YAML Formatter & Validator
Validate and format YAML or convert YAML data into readable JSON.
Keep sensitive data out of tools
Browser processing reduces unnecessary uploads, but you should still remove access tokens, passwords, personal data, and production secrets before pasting a response into any online utility. Use a small representative sample whenever possible.
View all developer tools