Clean CSV & Excel
Drop a spreadsheet
CSV · Excel · TSV · stays on your device
Drop a spreadsheet
CSV · Excel · TSV · stays on your device
Tidy up a messy CSV or Excel spreadsheet without uploading it anywhere. Remove duplicate rows, trim stray spaces, drop blank rows and empty columns, and strip hidden characters — then download a clean file as CSV or Excel. Everything runs in your browser, so sensitive customer, financial or contact data never leaves your device.
It handles quoted fields, commas inside values, semicolon- and tab-separated files, and real .xlsx workbooks — so messy exports parse correctly instead of breaking on the first stray comma.
No. The file is parsed and cleaned entirely in your browser — nothing is sent to a server, which matters when the data is confidential.
Yes. It reads .xlsx and .xls workbooks (the first sheet) and can export cleaned data back to Excel or CSV.
Yes — it drops exact duplicate rows, keeps the first occurrence, and tells you how many it removed.