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CSV ↔ JSON converter — offline

Spreadsheet exports to JSON and back, with a live table preview — nothing uploaded.

100% private — files never leave your device
CSV
JSON

How it works

  1. 1

    Pick the direction.

  2. 2

    Paste CSV (or drop a .csv file) or a JSON array.

  3. 3

    Check the preview table, copy the result.

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Frequently asked questions

Are my spreadsheets uploaded to convert them?

No — parsing uses the open-source Papa Parse library in your browser. Exports full of customer data stay on your machine.

Which direction does it convert?

Both: CSV (with a header row) becomes an array of JSON objects, and a JSON array of objects becomes CSV. A table preview shows the first rows.

Are delimiters detected automatically?

Yes — comma, semicolon, and tab are auto-detected on input; output uses commas.