UseCase Solution
Clean CSV Files & Remove Duplicates
Turn messy CSV into import-ready data with cleaning, dedup, and export in one flow.
100% Local Processing
Up to 10M Rows
Instant Results
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The Problem
CSV files from different sources often include spaces, invisible characters, and inconsistent date formats that break imports or hide duplicates.
Our Solution
Parse CSV locally, normalize formats, and deduplicate with a preview before export.
Key Features
Features optimized for this use case
Multi-file CSV import
Header and blank-row detection
Space/invisible character cleanup
Date and number normalization
Dedup + merge strategies
Local processing, zero upload
How It Works
Complete data cleaning in three simple steps
Upload CSV
Import one or multiple CSV files
Set Cleaning Rules
Choose normalization and dedup strategies
Preview & Export
Review results and download
FAQ
Common questions about this use case
Yes. Upload multiple CSV files at once.
Yes. It removes excess spaces and hidden characters.
Performance depends on your browser. For huge files, consider processing in batches.
No. All processing happens locally in your browser.
Ready to Clean Your Data?
100% free. 100% local. Your data never leaves your browser.