Parquet Viewer
Open a Parquet file and inspect its schema, metadata and data — right here in your browser. Nothing is uploaded: reading happens locally via WebAssembly, so it works with confidential data and multi-gigabyte files alike.
How it works
This viewer reads Parquet files with hyparquet, a pure-JavaScript Parquet reader. Only the metadata footer and the row ranges you actually look at are read from disk, so opening a large file is instant — the file is never loaded into memory in full, and never sent to any server. Snappy, Gzip, Zstd and LZ4 compressed files are all supported.
Why view Parquet in the browser?
Parquet is a columnar binary format — you cannot just open it in a text editor, and spinning up Spark, pandas or DuckDB on your laptop just to peek at a file is overkill. This page replaces that ritual with a drag & drop. Because processing is fully client-side, it is also safe for files you are not allowed to upload to third-party services or AI chatbots.