Data profile — column stats for your file

Your files never leave your browser

Drop a Parquet, Avro, CSV, TSV, JSON or JSONL file to get an instant per-column profile: type, null %, approximate distinct count, min/max, mean and median. It runs entirely in your browser (DuckDB-WASM) over the whole dataset — nothing is uploaded.

Drop a file or click to browse

Parquet, Avro, CSV, TSV, JSON, JSONL — processed locally, never uploaded