The All-in-One Developer Toolkit for Mac & Windows

Code Swiss Knife is a free beta toolkit designed for developers who need quick, reliable conversions. Convert JSON to CSV in seconds, right in your browser—no installs, no data uploads, no hassle.

Open the Tool

Why use Code Swiss Knife?

Instant JSON to CSV conversion with accurate field mapping

Works seamlessly on macOS and Windows via any modern browser

100% client-side processing—your data never leaves your device

Clean, distraction-free interface built for developers

Free to use during beta with more tools coming soon

How it works

  1. Paste your JSON array into the input field.
  2. Click the 'Convert to CSV' button.
  3. Copy the CSV output or save it to your clipboard.
  4. Use the CSV in Excel, Google Sheets, or your data pipeline.

FAQ

Is Code Swiss Knife really free?

Yes, during the beta period, all tools including the JSON to CSV converter are completely free. No credit card or sign-up required.

Does my data get uploaded to a server?

No. All conversions happen locally in your browser using JavaScript. Your data never leaves your computer, ensuring maximum privacy.

What kind of JSON structure is supported?

The converter expects a JSON array of objects. Each object becomes a row in the CSV, and keys become column headers. Nested objects are flattened with dot notation.

Will there be more tools added?

Absolutely. Code Swiss Knife is a growing toolkit. We plan to add JSON formatting, base64 encoding, timestamp conversion, and more in upcoming releases.