Turn your Excel data into JSON in one click. The file is processed in your browser and isn't uploaded to any server.
No sign-up and nothing uploaded to a server: everything happens in your browser. See for yourself.
No. Everything is processed inside your browser, and your files never leave your device.
There's no fixed limit. Sheets with hundreds of thousands of rows can be slow or use a lot of memory; use a computer for those.
The values are converted. Formulas are saved with their result, and visual formatting is lost.
Turn your Excel rows into a JSON list, with the first row as the field names. Useful for developers and for feeding applications.
Because everything happens on your device, you can convert customer lists, payrolls or inventories without exposing them on the internet.
If your workbook has several sheets, the first one is converted.