CSV Cleaner & Duplicate Remover
Remove duplicate rows, blank rows and extra spaces from any CSV in seconds.
How to use
- Paste CSV or load a .csv file from your computer.
- Pick what to clean: duplicates, blank rows, spaces. Optionally dedupe by one column, e.g. email.
- Click Clean CSV, then copy the result. Choose Tab output to paste straight into Excel.
FAQ
How many rows can it handle?
Hundreds of thousands in a modern browser — it runs locally.
Does it detect semicolon CSVs?
Yes, the delimiter (comma, semicolon, tab, pipe) is detected automatically.