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DataRefine
A browser-based messy data cleaner
Portfolio Project · Data Quality

Turn messy spreadsheets into cleaner, more trustworthy data.

DataRefine checks CSV and Excel files for common quality problems, explains what it finds in plain English, and lets you review safe corrections before exporting a cleaner copy.

✓ Runs in your browser ✓ CSV + Excel support ✓ Beginner-friendly explanations ✓ Review before changing data
Drop a spreadsheet here
I’ll scan it for duplicates, missing values, inconsistent text, suspicious numbers, extra whitespace, and other common issues.
Supports .csv, .xlsx and .xls · Best with a header row
Your file stays on this device. DataRefine processes the file in your browser and does not upload the spreadsheet to a server.
No file loaded
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Rows
0
records in the current dataset
Columns
0
fields detected from the header row
Issues found
0
potential data-quality problems
Quality score
100
simple portfolio-demo health score
No rows displayed. Showing up to 250 rows for browser performance.
Review issue
Understand the issue before changing your data.
✓
Cleaner copy ready
Your original file has not been overwritten.
0 duplicate rows removed
0 whitespace fixes
0 safe text-format fixes
0 items still worth reviewing