Parquet Viewer
Open & view Apache Parquet file contents right in the browser. Everything runs on your device — nothing is sent to a server.
Drag & drop a .parquet file here, or click to choose
The file is processed in your browser and never uploaded to a server.
Example
Example Input
(upload a .parquet file)
Example Output
Schema: id, name
Rows: 1000
Preview: [ { "id": 1, … } ]How to Use
- 1Drag & drop a .parquet file (or click to choose).
- 2Click "Read Parquet".
- 3View the schema, row count, and a data preview (JSON).
About Parquet Viewer
Apache Parquet is a binary columnar format widely used in big data and analytics (Spark, Pandas, data lakes). Its files cannot be read with an ordinary text editor.
Parquet Viewer reads your .parquet file entirely in the browser (the hyparquet library) and shows the column schema, row count, and a preview of rows as JSON.
The file is processed locally — never uploaded. It is great for peeking into a Parquet dataset without opening Python or Spark.
FAQ
Is my data sent to a server?
No. Parquet Viewer runs entirely in your browser using client-side libraries. Your data never leaves your device.