I Built a CSV Cleanup Tool That Fixes Messy Data in Seconds

If you've ever worked with data from multiple sources, you know the pain of messy CSV files:

• Duplicate rows that mess up your reports
• Empty cells that break your imports
• Date formats all over the place (2025-01-04, 01/04/2025, January 4...)
• Hidden whitespace that causes silent matching failures

I got tired of writing one-off scripts every time, so I built CleanCSV AI - a tool that diagnoses and fixes these issues automatically.

How It Works

1. Upload your messy CSV/Excel file
2. Review the diagnostic report (duplicates, blanks, date drift, etc.)
3. Choose which fixes to apply
4. Download the cleaned file with a full change log

What It Catches

• ✅ Duplicate rows
• ✅ Empty/missing values
• ✅ Inconsistent date formats
• ✅ Leading/trailing whitespace
• ✅ Mixed data types in columns
• ✅ Outlier values

The Stack

Built with Next.js 14, deployed on a VPS. The core cleanup logic is deterministic (no AI guessing for simple fixes), which means results are repeatable.

Try It

Free tier available - files up to 1MB, 5 analyses per day.

👉 cleancsvai.com

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What's your go-to method for cleaning messy data? Would love to hear about edge cases I should handle!