Hyparquet

Hyparquet is a pure JavaScript library for parsing Apache Parquet files directly in web browsers and Node.js environments. It specializes in efficient data retrieval from cloud storage by leveraging HTTP range requests, allowing for direct querying of Parquet files over the network without requiring a server-side intermediary. The library is dependency-free since 2023, offering a lightweight solution. Its current stable version is 1.25.6, with a release cadence that follows active development. Key differentiators include its ability to minimize data fetches through selective row and column filtering, comprehensive support for all Parquet types, encodings, and compression codecs, and inclusion of TypeScript definitions for improved developer experience. It is particularly well-suited for data engineering, data science, and machine learning applications where large datasets stored in Parquet format need to be accessed and processed client-side.