Parquet viewer

View Apache Parquet files online. Inspect schemas, browse rows, and export to CSV, JSON, Excel, SQL, or XML — all locally in your browser.

How to open a Parquet file online

Apache Parquet is a binary, columnar format — you cannot open it in a text editor or double-click it into Excel. This viewer decodes .parquet files directly in your browser: drop one or more files (or load the built-in sample) and browse rows in a sortable, searchable table. Multiple files open as tabs; huge files load the first 100,000 rows with a load-more button.

Everything runs locally through WebAssembly. Files are never uploaded — there is no server — which makes this safe for data you could not paste into an online service.

What you can inspect

• Rows — sort by any column, full-text search, per-column exact or fuzzy filters.
• Schema & metadata — row groups, compression codecs, encodings, and column statistics from the Parquet footer.
• Column profile — null %, distinct counts, min / max / mean, top values, histograms.
• GeoParquet — point and polygon geometry on a local canvas map; no map-tile service is contacted.

Convert to CSV, JSON, Excel, and more

Export loaded rows from the viewer or use the dedicated converters: CSV, JSON, Excel (XLSX), SQL, XML, NDJSON, TSV, Markdown, HTML — plus the reverse direction (CSV, TSV, JSON, Excel into Parquet), a DuckDB SQL editor, a chart builder, a row editor, a two-file diff, and a compression optimizer.

Loading remote files

Append ?src=https://… to load a Parquet file straight from any CORS-enabled HTTPS host (S3, Hugging Face, GitHub raw). Bytes travel from that host directly to your browser via HTTP range requests.

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