Remove Duplicate Patient Records Without Cloud Uploads
Deduplicate patient lists, research cohorts, and registry exports — PHI never leaves your computer.
Research participant data stays local
HIPAA-safe: PHI never transmitted
Free preview • $3 to download cleaned file
Sound familiar?
Research cohorts have duplicate enrollments from multiple recruitment sites
Patient registries contain the same person under slightly different name spellings
Duplicate records inflate sample sizes and skew your statistical analysis
Why Clinical Research Coordinators choose browser-based cleaning
Your multi-site study recruited participants at three clinics, and the combined enrollment list has duplicates — some people registered at multiple locations. Before you can run your analysis, you need a clean dataset with unique participants. Uploading names, MRNs, and contact info to online deduplication tools would violate HIPAA. CSVCleaner finds exact-match duplicates in your browser so you can get accurate participant counts.
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
MRN-Based Matching
Deduplicate by medical record number for accuracy.
Multi-Column Matching
Match on name + DOB + site for cross-system deduplication.
Preserve First Entry
Keep original enrollment record, remove later duplicates.
Audit Trail Ready
See exactly which records were identified as duplicates.
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 Patient Records