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🧬 Free #dedupe #keys #cleanup

Duplicate Remover Tool for CSV Files

Upload a CSV, choose the field(s) that define “duplicate,” and download a unique output plus a separate duplicates file for review.

📁 Step 1: Upload File

Remove duplicates using phone, email, or a custom multi-column key. Outputs include unique rows and duplicates removed.

🧬
Drop a CSV file here or click to browse
.csv/.txt/.tsv  ·  Queued for larger files  ·  Max 50MB site setting
⚙️ Step 2: Match Settings
Phone matching can normalize to 10 digits. Custom columns combine values into one key.

Outputs include a unique file and a duplicates file (with reasons).

Tool overview

Upload a CSV, choose the field(s) that define “duplicate,” and download a unique output plus a separate duplicates file for review.

Who this tool is for

  • Sales and marketing teams cleaning lead exports before outreach
  • Call centers preparing dialer-ready files with one row per contact
  • Ops and analytics teams deduping datasets before reporting

How it works

  1. Upload your CSV file
  2. Select match keys (phone, email, or multiple columns)
  3. Run the tool to group rows and identify duplicates
  4. Download a unique output and a duplicates output

Use cases

  • Remove duplicate leads before a dialer upload
  • Keep one row per phone or email for imports
  • Export duplicates for QA and audit trails

Example input and outputs

Input key Unique output Duplicates output
phone one row per phone all extra rows per phone
email one row per email all extra rows per email
phone + campaign one row per combined key duplicates grouped by combined key

Security & privacy

Uploads and outputs are stored privately and served via protected download links. Outputs are retained for 30 days by default.

FAQ

How does duplicate matching work?
Choose phone, email, or multi-column keys. The tool groups rows by that key and exports unique rows plus duplicates for review.
Do I get a duplicates export?
Yes. You receive a unique output and a separate duplicates output so totals reconcile and QA is straightforward.
Are uploads private?
Yes. Uploads and outputs are stored privately and served via protected download links.