Question 1

How do I convert JSON to Excel?

Accepted Answer

Paste a JSON array of objects into the input area. The tool reads the keys as column headers and each array item as a row, then lets you download the result as .csv or .xlsx. Both formats open directly in Excel, Google Sheets and Numbers.

Question 2

What is the difference between CSV and XLSX output?

Accepted Answer

CSV is a plain-text comma-separated file that opens in any spreadsheet app and is ideal for re-import into databases. XLSX is the modern Excel binary format. This tool generates a SpreadsheetML 2003 .xls-compatible file (which Excel and Sheets open natively) without needing any external library.

Question 3

How are nested objects and arrays handled?

Accepted Answer

Nested objects are flattened using dot-notation keys (e.g. address.city becomes the column 'address.city'). Arrays are serialized to JSON strings inside the cell. You can disable flattening to keep raw JSON values.

Question 4

Is my JSON uploaded to a server?

Accepted Answer

No. All parsing and file generation happen locally in your browser. Your data never leaves your device.

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