Developed a feature in the lsst/daf_butler repository to enhance compatibility between Parquet files and Astropy Tables, focusing on seamless tabular data handling. The work introduced Parquet Formatter Metadata Keywords, specifically adding 'table::len::{name}' metadata for numpy string and bytes types, which streamlines interoperability and reduces manual metadata management in data engineering workflows. Leveraging Python and expertise in file format handling and metadata management, the solution improved the reliability of round-tripping tabular data across Parquet and Astropy. This targeted enhancement accelerates data ingestion and analytics by minimizing format friction and supporting more robust cross-tool data processing pipelines.