Convert JSON data to Excel (.xlsx) or CSV format. Supports nested object flattening, field selection, and array processing — all done locally in your browser.
Features
Paste or upload .json files
Automatic dot-path flattening for nested objects
Select which fields to keep, filter out unwanted columns
Export as .xlsx or .csv
Privacy-first: all processing stays in your browser
How to use
1Paste JSON text or upload a .json file
2Choose nested handling (flatten or embed)
3Select the fields you want to keep
4Choose output format and download
FAQ
What JSON formats are supported?
JSON arrays of objects, single objects, and deeply nested objects are all supported. The tool detects the format automatically.
How are nested objects flattened?
In flatten mode, nested paths use dot notation as column names, e.g. user.address.city. In embed mode, nested parts are stored as JSON strings in cells.
Is my data uploaded to a server?
No. All conversion happens locally in your browser. Your data never leaves your device.
Can I export only certain fields?
Yes. After parsing, all detected fields are shown with checkboxes so you can pick exactly which ones to export.
What output formats are available?
Excel (.xlsx) and CSV (.csv). CSV files are compatible with Excel and Google Sheets.