DATA / CLEANUP / STRUCTURE

CSV Cleanroom.

Turn messy spreadsheets into structured data. Deduplicate, normalize, sort, replace, inspect, and export. Your data stays on your computer.

FREE · LOCAL-FIRST · NO ACCOUNT

01 / Raw data and rules

CSV · TSV · SEMICOLON

Drop a CSV or TSV file hereor click to choose · up to 12 MB

Raw data (paste or edit)

Input delimiter

Deduplicate by

Sort output by

Text normalization

Find text (optional)

Replace with

PRO / Filter records · included

Column

Keep rows containing

Case-insensitive text filter, applied before deduplication and sorting.

Trim surrounding whitespace in every cell Remove completely blank rows Remove duplicate records First row contains column headings

Ready

02 / Clean output

NO DATA

0Input records

0Output records

0Removed

Data preview (first 80 records)

Upload data or try the example.

Clean CSV (editable export)

Quoted commas, newlines, and double-quotes are preserved during export. JSON/TSV downloads use the cleaned table above, while CSV downloads use this editable output.