QuackView is a fast, local-first data viewer for CSV, Excel, and Parquet files — powered by DuckDB. Your data never leaves your machine. WHAT YOU GET • Drag-and-drop file loading (CSV, Excel, Parquet) • Interactive charts and report dashboards • Export to PDF and HTML • Saved queries, views, and project files • 100% offline — no cloud, no subscriptions WHO IT'S FOR Analysts, researchers, and anyone who works with spreadsheets and wants SQL-level power without uploading data to the cloud.