FAQ

How do I convert a JSON file to Parquet format online?

Upload or drag your JSON file into the converter. The tool automatically detects the schema and converts your data. Then click 'Download Parquet' to export the file.

What JSON structure is required for conversion to Parquet?

The JSON file should contain an array of objects (e.g., [{...}, {...}]). If your JSON is a single object with an array property, the tool will automatically detect and use that array.

Where is my JSON data processed during conversion?

All conversion happens locally in your browser via WebAssembly. Your JSON file is never uploaded to any server, ensuring complete data privacy and security.

Can I convert nested JSON objects to Parquet?

Yes. The converter handles nested JSON structures and automatically maps them to Parquet's columnar format with appropriate data types.

How do I optimize Parquet file size when converting from JSON?

Select Zstandard compression for the best compression ratio, or choose Snappy for a balance between speed and size. Preview the schema to verify data types are optimal.