clean your data instantly
remove duplicates, fix missing values, and clean spreadsheets online. no sign-up required. privacy-first and offline-capable.
why use our csv cleaner?
- remove duplicate rows instantly
- fix missing values and standardise data
- clean spreadsheets without uploading to cloud
- privacy-first: your data stays on your device
- free online data cleaning tool - no sign-up needed
upload csv file
drag and drop your file here, or use paste from clipboard
or try a real dataset:
frequently asked questions
how do i clean my csv file?
upload your csv file or paste data directly. our tool will detect issues like duplicates and missing values, then clean your spreadsheet instantly.
is my data private when i clean spreadsheets?
yes. our csv cleaner runs offline in your browser using webassembly. your data never leaves your device.
can i remove duplicates from my spreadsheet?
yes. our duplicate remover identifies and removes duplicate rows while keeping the first occurrence.
do i need to sign up to clean data?
no sign-up required. this free online data cleaning tool works immediately without registration.