Nothing to paste? — a messy e-commerce order export with a duplicated key, placeholder values, broken arithmetic between columns and a future date, all waiting to be caught. Or , rendered from a saved reply with no run and no charge.
Paste the table
A CSV or TSV export with its header row — straight from a spreadsheet, an admin panel or a query result. The quick profiler computes shape, types, nulls, distincts and the classic red flags, free in your browser. No sign-in needed for that.
Get the reading
The grain and whether the obvious key actually holds. Quality issues ranked High, Medium or Low, each quoting the offending column and value — the duplicated key, the placeholder poisoning a metric, the arithmetic that does not reconcile — with a concrete fix. Nothing generic — and every column name and value the report quotes is checked back against the table you pasted, with anything it cannot find marked as unverified rather than shown as fact.
Run the analyses
The dimensions and metrics an analysis can trust, the patterns worth checking, and 3-5 specific analyses that name the metric, the slice and the payoff — none of them built on a column the quality list just condemned.