Format JSON and convert CSV data locally
Clean up structured data, catch syntax errors, and move tables between JSON and CSV formats.
Small data tasks without sending data away
Use the formatter for readable or minified JSON, or convert simple tables between CSV and JSON. All parsing and generation happens in the current browser session.
Useful for developers and spreadsheet workflows
- Pretty-print an API response for inspection.
- Convert a CSV export into a JSON array.
- Prepare JSON records for a spreadsheet.
What JSON shape is required for JSON to CSV?
Use an array of objects. Object keys become CSV column headers and each object becomes one row.
Are large data files supported?
Performance depends on browser memory. For very large exports, a desktop data tool may be more reliable.