CSV to JSON
Convert CSV files into a clean JSON array, right in your browser. Free, private, nothing uploaded.
Drop files here or click to browse
Converted on your device. Nothing is uploaded — no size limit.
Frequently asked questions
Are my files uploaded to a server?
No. Everything is processed entirely inside your browser. Your files never leave your device or get sent anywhere.
How are the columns mapped?
The first CSV row is used as the keys (headers) and each following row becomes a JSON object, producing an array of objects.
Is my data uploaded?
No — parsing happens entirely in your browser, so your CSV never leaves your device.