Clean a list without sending it anywhere
Drop a CSV or paste the text. The tool trims cells, drops empty rows and removes duplicates by the column you choose. The file never leaves this page.
What it does not do
It does not validate phone numbers, verify emails or check whether a business still exists. It does not merge near-duplicates such as “Example Co” and “Example Company”. Use the cleaned file as the start of a review, not the end.
If a cell begins with =, +, - or @, the export adds an apostrophe so a spreadsheet does not treat it as a formula.