Last updated
Why Use the API Response Formatter
- Instant readability — transforms minified responses into structured, indented output
- JSON and XML — handles both formats with proper syntax highlighting
- Validation — catches JSON syntax errors with exact line and column numbers
- Field filtering — extract specific fields using JSONPath expressions
- Size analysis — identify bloated responses and optimization opportunities
- Response comparison — diff two responses to spot differences instantly
Use the API Response Formatter at TechConverter.me whenever you need to understand, debug, or document an API response. All processing is client-side — your API data never leaves your browser.
Examples
Example 1: Formatting a Minified JSON Response
Raw API response (minified, hard to read):
{"user":{"id":"550e8400","name":"Jane Dev","email":"jane@example.com","roles":["admin","editor"],"preferences":{"theme":"dark","notifications":true,"language":"en"},"createdAt":"2024-01-15T10:30:00Z","lastLogin":"2024-03-17T09:15:00Z"}}
Formatted output:
{
"user": {
"id": "550e8400",
"name": "Jane Dev",
"email": "jane@example.com",
"roles": [
"admin",
"editor"
],
"preferences": {
"theme": "dark",
"notifications": true,
"language": "en"
},
"createdAt": "2024-01-15T10:30:00Z",
"lastLogin": "2024-03-17T09:15:00Z"
}
}The nested structure is immediately clear. Finding the "preferences" object or the "roles" array takes seconds instead of manually scanning a single line.
Example 2: Formatting an XML API Response (SOAP)
Raw XML (minified):
<?xml version="1.0"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><GetUserResponse><User><Id>123</Id><Name>Jane Dev</Name><Email>jane@example.com</Email></User></GetUserResponse></soap:Body></soap:Envelope>
Formatted output:
<?xml version="1.0"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<GetUserResponse>
<User>
<Id>123</Id>
<Name>Jane Dev</Name>
<Email>jane@example.com</Email>
</User>
</GetUserResponse>
</soap:Body>
</soap:Envelope>Example 3: JSON Validation — Catching Errors
Invalid JSON (common mistakes):
{
"name": "Jane Dev",
"email": "jane@example.com",
"active": true,
"score": 95, ← trailing comma (invalid JSON)
}
Error reported:
Line 5, Column 2: Unexpected token }
Hint: Remove the trailing comma after the last property
Fixed:
{
"name": "Jane Dev",
"email": "jane@example.com",
"active": true,
"score": 95
}