Clean and transform CSV data interactively — remove duplicate rows, trim whitespace from cells, delete empty rows, and normalize columns. See a live table preview with before/after counts, all in your browser with no uploads.
How to Use CSV Cleanup Studio
- 1Paste your CSV data or upload a .csv or .tsv file
- 2The interactive table preview shows parsed data with detected headers instantly
- 3Toggle cleanup options: remove duplicates (full row or selected column), trim whitespace, remove empty rows
- 4View row counts — before and after cleanup — for full transparency
- 5Copy the cleaned CSV to clipboard or download as a file
Features
- Paste CSV or upload files — supports .csv and .tsv formats with any custom delimiter
- Interactive table preview with duplicate removal (full row or by specific column)
- Trim whitespace from all cells and remove empty rows in one click
- Column operations with before/after row counts for full transparency
- Copy to clipboard or download cleaned CSV — all browser-local, no uploads
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.