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mukunku/ParquetViewer

A simple Windows desktop app for viewing and running basic SQL queries on Apache Parquet files.

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What is it?

ParquetViewer is a lightweight Windows desktop utility for opening Apache Parquet files without writing code. It lets you inspect a file's metadata, browse its rows, and run simple SQL queries against the data.

Beyond basic browsing, it can open a single file or a partitioned dataset, and generate a SQL schema from a Parquet file's structure. It also includes previews for image and audio data stored in Parquet columns, with the ability to export them.

The app is distributed as a download from the project's releases page and is built on .NET (C#). Usage instructions are maintained in the project wiki.

Key features

  • 01View Parquet file metadata
  • 02Run simple SQL queries on Parquet data
  • 03Open single files or partitioned datasets
  • 04Generate SQL schema from Parquet files
  • 05Preview and export image and audio data

Use cases

  • Quickly checking the contents and schema of a Parquet export on Windows
  • Running ad hoc SQL filters over a local Parquet dataset without setting up a database
  • Exporting image or audio blobs stored inside Parquet files

Quick start

  1. 1

    Download the app from the releases page

  2. 2

    Open the app and see the Wiki for usage details

Things to know

  • Windows only; the README describes it as a Windows desktop app.
  • Licensed under GPL-3.0, a copyleft license that requires derivative works to be open-sourced under the same terms.

Topics

#parquet#data-viewer#sql#windows#desktop-app#csharp#dotnet#apache-parquet#big-data#dot-net

FAQ

What is ParquetViewer?
A simple Windows desktop app for viewing and running basic SQL queries on Apache Parquet files. ParquetViewer is a lightweight Windows desktop utility for opening Apache Parquet files without writing code. It lets you inspect a file's metadata, browse its rows, and run simple SQL queries against the data.
Is ParquetViewer free to use? What license does it have?
ParquetViewer is open source under the GPL-3.0 license. Check the license terms before using it in commercial products.
Is ParquetViewer still maintained?
Actively maintained. The last commit to ParquetViewer was on Oct 17, 2026.
What can I use ParquetViewer for?
Quickly checking the contents and schema of a Parquet export on Windows Running ad hoc SQL filters over a local Parquet dataset without setting up a database Exporting image or audio blobs stored inside Parquet files
How do I install ParquetViewer?
Download the app from the releases page Open the app and see the Wiki for usage details
Where can I get ParquetViewer?
The source code and installation instructions are on GitHub: https://github.com/mukunku/ParquetViewer

Summary generated by AI from the project's README. GitHub stats refresh daily.

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