About ViewKit

ViewKit is a free tool for looking inside scientific and machine-learning data files right in your browser. Drop in a file and inspect it as a table, a heatmap, or a chart, without installing anything and without uploading your data anywhere.

It opens HDF5, Parquet, Zarr, Apache Arrow, CSV, Excel, JSON Lines, NumPy, safetensors, TFRecord, WebDataset and audio, all parsed locally so your data never leaves your device.