Every tool below runs in your browser. Free, local-first, no signup, no required upload. Each converter also tells you what's in your data — drop a file and find out.
If your CSV needs more than one operation — validate, then dedupe, then filter, then export — the pipeline runs them in one tab, re-computing instantly as you tweak each step.
Format converters with smart type detection — numbers stay numbers, dates stay dates, booleans stay booleans. No "everything as VARCHAR" output.
Catch problems before they bite — broken rows, missing values, bad delimiters, type mismatches, duplicate rows. Then fix what's fixable.
Real SQL against a CSV — no database setup, no upload, no signup. SELECT, WHERE with AND/OR, ORDER BY, LIMIT — and an integrated path into the dashboard.
Once your data is shaped, the dashboard auto-generates KPIs, charts, anomalies, top-movers and a sortable table. Click any chart to filter, drag the time chart to brush.