Remove Duplicate Employee Records Without Uploading PII
Deduplicate employee lists, org charts, and HRIS exports — sensitive personnel data never leaves your browser.
Employee records stay on your secured workstation
Safe for payroll and personnel data
Free preview • $3 to download cleaned file
Sound familiar?
Employees appear multiple times after HRIS migration or acquisition
Payroll runs duplicate paychecks because of duplicate employee records
Headcount reports are inaccurate due to duplicate entries
Why HRIS Administrators choose browser-based cleaning
After acquiring another company, your HRIS has duplicates: some employees exist in both the legacy system and the new one, with slight variations in name spelling or employee ID format. Payroll almost sent duplicate checks. You need to deduplicate before the next pay run, but you can't send employee names, SSNs, and salary data to online tools. CSVCleaner finds duplicates locally.
Your data never leaves your computer
All processing happens in your browser
No cloud uploads required
Unlike AI tools that need your data
Works offline after loading
No internet needed to process files
No account or login needed
Just upload and clean
What you can fix
Employee ID Matching
Deduplicate by employee number or badge ID.
SSN-Based Detection
Find duplicates even when names differ slightly.
Cross-System Matching
Match records from merged HRIS systems.
Keep Most Recent
Preserve the record with current information.
Ready to clean your data?
Preview for free. See exactly what will be fixed before you pay. Your data stays in your browser the entire time.
Deduplicate Employee Records