Paste or type JSON on the left and Reformatr writes the equivalent CSV on the right as you type. Input is validated, errors are reported inline, and the whole conversion happens locally in your browser - your data is never sent to a server.

How JSON to CSV conversion works

• Paste, type or drop JSON into the input pane.
• CSV is produced as you type, with syntax errors reported inline.
• Copy the CSV output, or download it as a file.
• Everything runs in your browser - your data never leaves the page.

Going the other way? Use the CSV to JSON converter.

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