Array of objects (using headers as keys), array of arrays, or objects with custom key field. Choose the format that best fits your API or application needs.

Empty cells become empty strings by default. Enable 'Skip empty' to exclude them from output, or parse them as null values for JSON APIs.

Yes. Select Tab as the delimiter or use auto-detect which handles TSV automatically. The tool also supports semicolon, pipe, and custom delimiters.

The converter automatically parses numbers and booleans. You can disable type conversion to keep all values as strings, useful for preserving leading zeros or specific formatting.

When using nested output format, fields like 'address.city' are converted into nested JSON objects: {address: {city: 'value'}}. Perfect for hierarchical API structures.

Yes. The converter processes files entirely in your browser memory. Files up to several hundred MB work well on modern computers. For very large datasets, consider splitting the file first.

CSV fields enclosed in quotes are properly parsed, preserving commas, newlines, and quotes within the field. Follows RFC 4180 CSV specification.

Yes. All conversion happens in your browser using JavaScript. No data is sent to any server. Your CSV files never leave your device.

Uncheck 'First row is header' and the converter will auto-generate column names (col1, col2, etc.). You can also define custom field names.

Absolutely. Convert CSV data to JSON for REST APIs, NoSQL databases like MongoDB, or JavaScript applications. The minify option creates compact JSON for network transfer.

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