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Parquet / Arrow / Avro Viewer

View, filter and convert Parquet, Arrow, Feather and Avro files to CSV, JSON or Excel.

Free, no uploads, no sign-up. Runs 100% in your browser.

How Parquet / Arrow / Avro Viewer works

Parquet is read with hyparquet (Snappy, Gzip, Zstd, Brotli and LZ4 supported), Arrow and Feather with Apache Arrow JS, and Avro container files with a small built-in reader (null, deflate and snappy codecs). Rows are shown in a table you can filter, and you can export only the columns you keep.

Input: PARQUET, ARROW, FEATHER, AVRO. Output: CSV, JSON, NDJSON, XLSX.

How to use Parquet / Arrow / Avro Viewer

1. Open Parquet / Arrow / Avro Viewer and add your file or input.
2. Pick the options you need. Everything runs on your device.
3. Press the main button and download the result.

Tips

• Nothing is uploaded. Your files stay in this browser tab.

Parquet / Arrow / Avro Viewer FAQ

Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

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