Can I preview the output?

Yes, the first records are shown directly on the page.

CSV to JSON

Convert CSV files to JSON or JSON-Lines format in one click. The safest way to process sensitive data with zero-upload, clien

Your files never leave your device. Processed locally. 100% private.

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Complete your task perfectly in just three straightforward steps.

Drop your CSV file.

Choose Array of Objects or JSON-Lines. Enable type detection.

Download the JSON file or copy the JSON.

Everything you need to know about the CSV to JSON.

What JSON format is produced?

An array of objects with CSV headers as keys.

Are data types detected?

Numbers and booleans are automatically cast.

Is my file uploaded?

No. Everything runs locally.

Is there a size limit?

Free up to 10 MB.

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