Remove Duplicate Values
When only the first column defines uniqueness — emails, SKUs, IDs — dedupe by that column and keep full rows.
Same browser tool as Data Cleaner.
Drag TXT, CSV, or XLSX here, or
About this page
Duplicate values often mean duplicate keys while other columns differ. First-column mode keeps the first row per key.
Use full-row duplicate removal when every field must match to count as a duplicate.
How to use
- Load CSV or spreadsheet data.
- Select duplicate mode: first column only (preset here).
- Clean, verify counts in the stats panel, and download.
FAQ
- What is the difference from duplicate rows?
- Duplicate rows require an exact match across all columns. Duplicate values only compare the first column.
- Is my data uploaded?
- No. Files and pasted text are processed locally in your browser.
- Is this tool free?
- Yes. No registration is required.