Giovanni Torrini developed a feature for the lsst/daf_butler repository that enhances Parquet formatting compatibility with Astropy Tables. Using Python and leveraging data engineering and metadata management skills, Giovanni implemented Parquet Formatter Metadata Keywords to add 'table::len::{name}' metadata for numpy string and bytes types. This technical approach improves interoperability between Parquet files and Astropy Tables, streamlining tabular data handling and reducing manual metadata adjustments in data pipelines. The work focused on file format handling and addressed the challenge of reliable round-tripping of tabular data, ultimately accelerating data ingestion and analytics workflows by minimizing format friction across tools.