Parquet File Reader — Free Online Tool
Open Apache Parquet files and view the schema and rows — privately in your browser.
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Click to select a .parquet file
Parsed locally — nothing is uploaded
About Parquet File Reader
The Parquet File Reader lets you open Apache Parquet files directly in your browser to inspect their contents without any database or data tool. It reads the file's schema, row count, and compression, then renders the rows as a clean table you can scan quickly.
Parquet is a columnar storage format common in data engineering and analytics (Spark, Athena, BigQuery exports). This reader parses it locally with JavaScript, so even sensitive datasets stay private on your device.
How to Use Parquet File Reader
- Click the upload area and select a .parquet file.
- Wait while the schema and rows are parsed.
- Review the metadata and the table of rows.
- Search the preview to find values quickly.
Key Features
Reads Apache Parquet schema and rows
Shows row count, columns and compression
Table preview of the first 1,000 rows
Snappy, Gzip and uncompressed support
100% client-side — files never leave your device
Frequently Asked Questions
How do I open a Parquet file?
Click to select a .parquet file. The tool reads its metadata (schema, row count, compression) and renders the first rows as a table — all in your browser.
Are my Parquet files uploaded?
No. The file is parsed locally using the hyparquet JavaScript library, so your data never leaves your device.
Is there a row limit?
For responsiveness, the table preview shows the first 1,000 rows. The metadata still reports the true total row count of the file.
What if my file fails to load?
Some Parquet files use codecs (like LZO) or features not supported in-browser. If a file can't be read, you'll see an error message. Snappy, Gzip and uncompressed files generally work.