Arrow & Parquet

Business-grade analytics without shipping data away

Arrow & Parquet is a high-performance, fully client-side data transformation and analysis tool that bridges familiar file formats with modern in-browser analytics.

Import Arrow, Arrows, CSV, JSON, and native Parquet files, then convert incoming data to optimized Parquet directly in the browser with Rust WebAssembly.

Once loaded, DuckDB WASM and Monaco Editor provide local SQL execution, structure validation, IntelliSense-assisted editing, and export to CSV or Parquet for downstream BI and machine learning workflows.

Launch Arrow & Parquet

Local conversion, local inspection, local SQL editing and execution, and local export in one workspace.

What the app is for

A working surface for local data files, not a decorative dashboard.

The application uses the browser's Origin Private File System (OPFS) to handle large WebAssembly payloads and high-speed local storage without relying on an external server. That keeps ingestion, transformation, querying, and export fully local so sensitive data never leaves the machine.