Parquet viewer
To open a Parquet file, drop it in the box below. It opens straight away, even with no extension or the wrong one. Your browser opens it on your device: nothing is uploaded.
What you see
| Parquet in the viewer | |
|---|---|
| Compression | Snappy, gzip, Zstandard, Brotli and LZ4 |
| Rows | Up to a million shown; the count covers all |
| Types | Dates and timestamps as ISO dates, nested columns as JSON |
| Files with no extension | Opened from their bytes (PAR1) |
| Extensions | .parquet, .pq, .parq |
| Upload | None: opened on your device |
What is a Parquet file?
Parquet is a columnar file format for data analysis: compressed columns with their types, made by Spark, pandas, DuckDB and most data tools.
The rows in a table you can sort, filter and search, read one row group at a time. Schema lists each column and its type. Details lists the row count, row groups, compression and the tool that wrote it.
How to open a Parquet file
- Add your Parquet. Drop the file in the box, choose it or paste it.
- Look at it. The rows in a table you can sort, filter and search, read one row group at a time. Schema lists each column and its type. Details lists the row count, row groups, compression and the tool that wrote it.
- Take it further. Open in hands it, in a new tab, to File converter.
Questions
Drop it here. The rows open as a table in the page; Open in, Convert saves them as CSV, Excel or JSON.
Only the parts needed: the footer first, then one row group at a time, so a large file opens without loading all of it.
No. The viewer runs in your browser and opens the file on your device. Nothing is sent anywhere.