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See How CleanDupTool Finds CRM Duplicates

Pick a sample dataset and instantly detect duplicate Contacts, Companies, Leads and Accounts — grouped and scored, ready for safe merging.

Upload CRM data

Includes intentionally messy CRM data with duplicates across contacts, companies and leads.

Auto-detected columns: External ID, Company name, First name, Last name, Email, Phone, Corporate domain, Postcode, Company House #. Max 5MB / 2,000 rows for the free scan.

salesforce-sample.csv · 8 records
  1. Step 1
    Parsing CRM records
  2. Step 2
    Normalising names, emails and companies
  3. Step 3
    Running exact + fuzzy matching
  4. Step 4
    Grouping duplicate clusters
  5. Step 5
    Generating confidence scores
Total records
8
Duplicates found
7
Duplicate groups
3
Estimated cleanup
88%

Duplicate groups

GroupPrimary recordDupesConfidence
#001Initech Group
Peter Gibbons
2100%
#002Globex Holdings Plc
Sarah Doe
295%
#003Acme Limited
John Smith
394%

Example duplicate group

2 duplicates matched
100% confidence
Identical Company House # · Shared corporate domain · Fuzzy name match (100%) · Company House # · Domain · Postcode · Company name
  • Peter Gibbons · Initech Group
    peter@initech.io
    Golden
  • Pete Gibbons · Initech
    pete.gibbons@initech.io
    Merge
Result: 2 records → 1 golden record

How duplicate detection works

Exact matching

Email, phone and corporate domain — identical values first.

Fuzzy name matching

Catches typos, abbreviations and casing differences.

Company normalisation

Strips Ltd, Inc, Plc and punctuation for clean comparison.

Multi-field cross-check

Combines name, domain, postcode and phone for higher accuracy.

Confidence scoring

Every group scored 0–100% so you can merge safely.

What this means for your CRM

  • Fewer duplicate sales conversations
  • Cleaner reporting and dashboards
  • More accurate automation workflows
  • Improved pipeline visibility
  • Higher CRM trust across teams

Built for your CRM

Salesforce

Detect duplicate Leads, Contacts, Accounts and Opportunities before they affect reporting.

HubSpot

Clean duplicate Contacts and Companies to improve automation and lifecycle tracking.

Pipedrive

Remove duplicate People and Organizations to keep your pipeline accurate.

Ready to clean your CRM data?

Upload your CRM export and find duplicates in seconds — no installation, no credit card.

Feedback & contact

Tell us what's missing.

Found a bug, want a feature, or have a CRM we should support? Drop us a note — replies usually within a day.

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