Yes, completely free with no signup required.

Does my data leave my device?

No. All conversion happens locally in your browser — nothing is sent to a server.

Does it work on mobile?

Yes. The tool is mobile-first and works on any modern browser.

Paste a JSON array or a CSV and convert it bidirectionally — JSON to CSV or CSV to JSON.

100% in your browser. Your file never leaves your device.

Input

JSON → CSV CSV → JSON

Paste JSON or CSV above, choose a direction, then click Convert.

Is this tool free?: Yes, completely free with no signup required.
Does my data leave my device?: No. All conversion happens locally in your browser — nothing is sent to a server.
Does it work on mobile?: Yes. The tool is mobile-first and works on any modern browser.