CSV Cleaner is a lightweight Google Sheets™ add-on that helps you clean up messy CSV data after copy/paste, exports, or API pulls — trimming whitespace, normalizing dates, converting numbers stored as text, and removing duplicate rows.
Parses real CSV (including quoted values) and splits into columns.
Trims hidden characters, standardizes headers, fixes common date patterns.
Writes cleaned output to a new sheet (does not overwrite your original).
CSV Cleaner runs inside Google Sheets™ using Google Apps Script. It processes spreadsheet content only to perform the cleaning actions you select. It does not sell data and does not intentionally transfer data to third parties.