CSV & TSV cleanup

Map columns in CSV or TSV files, apply cleanup rules and save the merged result.

Three steps

1. Add UTF-8 CSV/TSV files or paste their contents.
2. Check delimiters, headers, column mapping and cleanup rules.
3. Review the preview and export warnings, then save.

Supported features and limits

Supports positional column mapping, literal replacement, empty-row cleanup and transformed-cell review.

Up to three files, 2 MiB combined, 10,000 rows and 100 columns. Pasted text: 2,000 physical lines. Cells remain strings; spreadsheet round trips are not guaranteed.

If something goes wrong

Check UTF-8 encoding, delimiters, quoting and limits. Read export warnings for formula-like cells and choose how to handle them.