FileBrixNo upload · Private
Processed locally — your file never leaves your device

Parquet to CSV Converter

Convert Apache Parquet files to CSV entirely in your browser, without installing Python, pandas or DuckDB.

Parquet
Drop a spreadsheet or data file hereor click to choose a file from your deviceNothing is uploaded — everything happens on your device.

How it works

  1. Select or drop a .parquet file.
  2. It's read locally by a SQL engine running inside your browser.
  3. Download the resulting .csv file.

Frequently asked questions

Is my Parquet file uploaded?
No. Parquet is read on your device by DuckDB compiled to WebAssembly — a real analytical database engine running inside the browser tab, not a server.
Why is this unusual?
Parquet is a columnar binary format, so opening one normally means installing Python with pandas, or DuckDB, or a cloud tool. Doing it in a browser tab without uploading is the part most alternatives can't offer.
Is there a size limit?
Converting to CSV materializes the whole dataset in memory, so it's bounded by your device's RAM rather than a fixed cap. If you only want to look at a large file, the Parquet Viewer pages through it without materializing it.
Are compressed Parquet files supported?
Yes. Snappy, gzip and zstd compression are handled by the engine automatically — you don't need to decompress anything first.