CSV Cleanup Studio
Clean CSV data - deduplicate, trim, normalize
Clean and transform CSV data - remove duplicates, trim whitespace, delete empty rows, and more. Interactive preview with instant results.
How to Use CSV Cleanup Studio
- 1Paste your CSV data or upload a .csv file
- 2The table preview shows parsed data with detected headers
- 3Toggle cleanup options: remove duplicates, trim whitespace, remove empty rows
- 4View row counts - before and after cleanup
- 5Copy the cleaned CSV or download it as a file
Features
- Paste CSV or upload file - supports .csv and .tsv formats
- Interactive table preview - see your data parsed instantly
- Remove duplicate rows - based on full row or selected columns
- Trim whitespace - clean leading/trailing spaces from all cells
- Remove empty rows - delete rows where all cells are empty
- Column operations - sort columns alphabetically or by value
- Before/after row counts - see exactly how many rows were removed
- Copy to clipboard or download - get cleaned CSV with one click
- 100% browser-local - no data uploaded anywhere
Frequently Asked Questions
What CSV formats are supported?
Standard CSV with commas, TSV with tabs, and any custom delimiter. Headers are auto-detected from the first row.
How does duplicate removal work?
By default it removes rows where all columns match an earlier row. You can also deduplicate based on a specific column.
Is there a file size limit?
CSV files up to 10MB are supported. For larger files, the processing may slow down since everything runs in your browser.
Are my files uploaded to a server?
No. All CSV processing happens entirely in your browser. Your data never leaves your device.