CSV Cleaner

Importing a CRM export twice, or merging lists from two marketing tools, produces duplicate rows that look harmless and cause real damage after import: you email the same contact twice, inflate list counts, and skew reporting totals. Run the file through the cleaner first. It removes exact duplicate rows and fully empty lines, and trims stray whitespace that makes valid-looking addresses actually invalid. Check the summary for how many rows were removed before you import, because it tells you more about your source systems than about the file itself.

Empty rows and malformed quoting are the classic reasons a database import fails halfway or a pivot table skips data. A CSV field containing a comma, quote, or newline must be quoted, and naive tools that split on commas destroy such records. The cleaner parses the structure first, then removes empty rows and trims cells, so multi-line addresses and quoted commas survive intact. Use it before loading into SQL or an analytics tool. Everything runs in your browser, so the file stays on your device.