Apache Parquet Viewer

View, filter, sort, and export Parquet files entirely in your browser. No upload required - your data stays private.

Drop .parquet file here or browse

Max 100MB • Supports .parquet and .pq

Paste a public HTTPS URL to a Parquet file

No upload - 100% client-side

Instant loading

Export to CSV

Batch Parquet to CSV Converter

Convert multiple Parquet files to CSV at once. All processing happens in your browser.

Drop multiple .parquet files here or browse

Select multiple files • Max 100MB each

Converting...

How to View Parquet Files

Upload Your File

Drag and drop a .parquet file or click to browse. You can also load from a URL or use the batch converter for multiple files.

View & Explore

See the schema at the top showing column names and data types. Navigate through pages using the pagination controls.

Filter & Sort

Click column headers to sort ascending/descending. Use the filter box to search across all columns. Hide/show columns using the Columns button.

Export to CSV

Click "Export CSV" to download visible rows (up to 100,000) as a CSV file. The export respects your current filter and column visibility settings.

Note: All processing happens in your browser using DuckDB-WASM. Your files are never uploaded to any server.

Frequently Asked Questions

What is a Parquet file?

Apache Parquet is a columnar storage format optimized for analytics and big data processing. It provides efficient compression and encoding schemes for better performance.

Is this tool free?

Yes, this Parquet Viewer is completely free and open source. There are no usage limits or registration required.

Is my data secure?

Absolutely. All processing happens locally in your browser using WebAssembly. Your files never leave your device - no upload to any server.

What is the maximum file size?

The tool supports files up to 100MB. Larger files may work but could impact browser performance.

Which browsers are supported?

Modern browsers including Chrome, Edge, Firefox, and Safari. The tool requires WebAssembly support.

Can I convert Parquet to CSV?

Yes! You can export individual files or use the Batch Convert feature to convert multiple Parquet files to CSV at once.

Why is my date column showing numbers?

Timestamps are displayed as readable dates automatically. If you see raw numbers, they may be in a different format (e.g., seconds vs milliseconds since epoch).

Schema

Show all