JSON Formatter & Validator
Format and validate your JSON data for improved readability and error checking.
Input
Paste your JSON here to format and validate it.
Output
Formatted and validated JSON will appear here.
Formatted JSON will appear here...
Using JSON Formatter and Validator for open banking
Format API payloads and locate JSON syntax errors while debugging open banking integrations.
Sandbox example and expected result
Format {"consentId":"sandbox-123","status":"Authorised"} to inspect each field.
Limitations and troubleshooting
Valid JSON does not mean a payload matches an API schema. Remove trailing commas and quote property names; large numbers may lose precision when parsed as JavaScript numbers.
Where your input is processed
Formatting runs in your browser. Use synthetic test data.
Maintained by OpenFinanceTools. Guidance updated 23 October 2026. Testing and editorial approach