Data
Parquet Viewer
Open and inspect Apache Parquet files directly in the browser.
Drag & drop or select a local file. Processed entirely in-browser.
Drop file here
About Parquet Viewer
Our Parquet Viewer allows you to open and explore Apache Parquet files directly in your web browser. It renders the columnar data into a readable grid, acting as a lightweight local viewer for heavy data files.
Perform spot checks and data analysis on your output files instantly. Loading parquet data often requires complex setups like Jupyter or Pandas; this tool removes that friction, enabling quick verification of data integrity and values on the fly.
Drag and drop your Parquet file. The viewer loads the data using WebAssembly for speed. You can scroll through rows and columns to verify the contents without uploading your private data to any server.
Under the Hood
The viewer utilizes `parquet-wasm` (Rust bindings for Apache Parquet) to decode Parquet files directly in the browser. It reads the file footer to determine the schema and row count. Data is fetched in chunks (row groups) to populate a virtualized table (e.g., `tanstack-table` or similar), ensuring that even multi-gigabyte files can be browsed smoothly without loading the entire dataset into JS heap memory.