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
Delimiter
Match
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.