Free browser-only tool

Data-cleanup rules planner

Choose the transformations you need and download a reusable JSON planning file. No dataset is requested, uploaded, or stored.

Select cleanup operations Trim leading, trailing, and repeated whitespace Normalize column headers to snake_case Normalize text casing in selected columns Standardize parseable dates to ISO 8601 Standardize phone formatting after country selection Map configured empty markers to null Remove exact duplicate rows while preserving order Remove rows containing no meaningful values

Generated cleanup plan

This planner defines intent, not changed-cell counts. Accurate counts require running each rule against the real dataset and reconciling the output.

Have up to 50k rows cleaned for $15 →