Toolsy
All tools

Data utility

JSON to CSV / Excel

Flatten JSON and export it as CSV or XLSX.

Processed locally in your browser.
Drop your file hereor choose from your deviceAccepted: .json, .jsonl, application/json, text/plain

Nested objects use dot notation. Arrays are saved as JSON text in one cell.

About JSON to CSV / Excel

Flatten JSON and export it as CSV or XLSX. Choose your files, review the result, and download it directly. Toolsy processes content on this device, so it remains private.

How to use it

Add a supported file, adjust the options, then download or copy the result. You can start over at any time.

FAQ

Are files uploaded? No. All processing happens in your browser. Does it work on mobile? Yes, in modern mobile browsers.