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Supports Apache Parquet · .parquetFile has no rows
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Apache Parquet fileThe FinancialDataTools.com Parquet Viewer is a free, browser-based tool for opening, inspecting, and exporting Apache Parquet files. It runs entirely in your browser using DuckDB-Wasm — no file is ever uploaded to any server.
Open any Apache Parquet file (.parquet). DuckDB-Wasm reads all standard Parquet versions and compression codecs natively: Snappy, Gzip, LZ4, Zstandard (Zstd), and uncompressed. All standard Parquet data types are supported.
Browse Parquet columns and rows in a spreadsheet-style grid. Sort any column ascending or descending. Filter rows by value or custom conditions. Inspect column schema and data types. Export data to CSV, JSON, TSV, or Excel (.xlsx).
All file processing happens inside your browser using DuckDB-Wasm. No file content is transmitted to any server. Closing the browser tab clears all data immediately.
Click the Open button or drag and drop your .parquet file. DuckDB-Wasm reads the file directly in your browser. Use the search box and column filters to explore your data. Click Schema to inspect column definitions. Export using the Export button.
Browse financial datasets stored in Parquet format from data pipelines. Inspect market data exports from Apache Spark or pandas. View trading strategy output stored as Parquet. Convert Parquet data to CSV or Excel for reporting. Audit large columnar datasets without needing Python or a data warehouse.
Yes, completely free with no signup required.
No. DuckDB-Wasm reads your file entirely in your browser.
Parquet 1.0 and 2.x, with Snappy, Gzip, LZ4, Zstd, and uncompressed codecs.
All standard Parquet types including integers, floats, strings, booleans, dates, timestamps, decimals, and nested types.