Parquet Viewer Online — Browse and Query Parquet Files in the Browser

Parquet files are great for storage and performance. They’re terrible for quick inspection — you can’t just open them in a text editor. PondPilot gives you a fast, browser-based Parquet viewer with full SQL support.

View Any Parquet File

  1. Open app.pondpilot.io
  2. Drop in your .parquet file
  3. Instantly see the schema, row count, and data preview

PondPilot reads Parquet files natively via DuckDB WebAssembly. It handles compressed Parquet (Snappy, ZSTD, GZIP), nested types, and large files efficiently.

More Than a Viewer

Most online Parquet viewers just show you rows. PondPilot gives you a full SQL engine:

SELECT date_trunc('month', created_at) as month,
       COUNT(*) as events,
       COUNT(DISTINCT user_id) as unique_users
FROM events
GROUP BY 1
ORDER BY 1

Aggregate, filter, join multiple files, use window functions — DuckDB’s full SQL dialect is available.

Schema Inspection

Parquet files carry rich metadata. PondPilot shows you:

  • Column names and data types
  • Nullable vs. non-nullable columns
  • Nested struct and array types
  • Row group statistics

This is invaluable when you receive a Parquet file and need to understand its structure before writing queries.

Export to Other Formats

View in Parquet, export as CSV for a colleague. Or JSON for an API. Or Excel for the finance team. PondPilot supports all common export formats from any Parquet input.

No Upload Required

Your Parquet files might contain production data, customer records, or analytics events. PondPilot processes everything locally in your browser. Nothing is uploaded to any server. The file stays on your machine — period.

Get Started

Visit app.pondpilot.io and open a Parquet file.

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