Remove duplicate rows from CSV
Paste or upload a CSV, choose the columns that make a row unique, and remove duplicate rows — exact or case-insensitive. See the counts before and after, then download the clean file. Nothing is uploaded.
Paste CSV
or
Options
First row is a header
Delimiter
Match
Trim spaces around values
When duplicates are found, keep
Compare by columns
Rows are duplicates when these columns match. Choose none to compare the whole row.
·
Rows in 0
→
Unique kept 0
·
Duplicates removed 0
Everything runs in your browser. No upload, no sign-up.
How it works
STEP 1
Add your CSV
Paste your data or upload a .csv file. The header row and columns are detected automatically.
STEP 2
Choose how to match
Compare whole rows or just the key columns, exactly or ignoring case. Pick whether to keep the first or last copy.
STEP 3
Download the clean file
See how many duplicates were removed, then download or copy the de-duplicated CSV. Nothing leaves your device.