JSON to CSV Converter
Convert files in your browser — nothing is uploaded, nothing is stored.
🔒 Your file is processed by your own browser. Nothing is uploaded, stored, or sent anywhere.
How it works
- Drop your file onto the box above, or click to choose one.
- The conversion runs immediately, on your device.
- Download the converted file.
Frequently asked questions
Is my file uploaded to a server?
No. The conversion runs inside your browser using JavaScript on your own device. The file never leaves your computer, and nothing is stored.
Does it cost anything, or need an account?
No. There is no signup, no account, no usage limit, and no payment.
How large a file can I convert?
Up to 19 MB. Because the work happens on your own device, very large files are limited by your available memory rather than by a server.
Does it work offline?
Yes. Once the page has loaded, you can disconnect and it will keep working — there are no network calls during conversion.