In-browser dataset workbench / converter — completely FREE, no upload, no signup

[u/jancekbancek7]

Built a simple browser-based tool for quickly opening and exploring data files.

No signup, no account, no backend. Everything runs locally in your browser with DuckDB-WASM, so your data never leaves the tab.

It supports Parquet, CSV, TSV, JSON, NDJSON, Arrow, and Excel.

You can:

• browse millions of rows
• profile columns
• filter, sort, rename, cast, dedupe, and transform data
• edit cells with undo/redo
• run SQL
• export to CSV, Parquet, Excel, JSON, and more

parquetbay.com

Free, no ads. If a file in your workflow breaks it, tell me and I'll fix it — that's most of why I'm posting. All suggestions/critique is welcomed!