Split an XLSX workbook into separate worksheets, or split one CSV, TSV, or XLSX table by a selected column value. Filenames are sanitized, collisions receive stable suffixes, and ZIP exports include a manifest.
The source file, selected column, split parts, and export manifest stay in your browser and are excluded from BaseToolbox analytics. Persistent browser storage is used when available.
1
Use workbook worksheets as parts, or choose one table and a column whose distinct values define groups.
2
The browser groups rows, preserves their source row provenance, sanitizes filenames, and resolves collisions with stable suffixes.
3
Inspect every group and row count, then download a ZIP of CSV files plus manifest or a combined XLSX workbook.