Parquet & Feather Preview
Opens Apache Parquet and Feather (Arrow IPC) files in your browser: schema with column types, row count, metadata, and a preview of the first rows — with CSV export of the preview. No Python, no Spark, no upload.
Runs 100% in your browser — your files never leave your device.
Read the full guide to this tool
Notes
- Parquet files are read with the pure-JavaScript hyparquet library, Feather files with Apache Arrow JS; both are loaded on demand from a CDN.
- Very large files are fine: only the first row groups needed for the preview are decoded.
- Runs 100% in your browser — your files and data never leave your device.
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