CSV cleaner
Quick help
Trim cells, remove identical rows, fix dates with an explicit format, split one column or append a merged column. Original source stays in the editor. Date blanks stay blank. Dedupe compares all cells after cleaning. Splitting replaces the original column; merging keeps both originals.
- Paste or load your data and choose the options.
- Prepare the result and review the preview.
- Download results or print. Export a draft before closing.
What it does not do: No uploads, cloud sync or automatic storage. No Excel workbooks. No guessing dates or address verification.
Trim cells, remove identical rows, fix dates with an explicit format, split one column or append a merged column. Original source stays in the editor. Date blanks stay blank. Dedupe compares all cells after cleaning. Splitting replaces the original column; merging keeps both originals.
Limits: 1 MB per input file, 10,000 data rows, 100 columns. Mail merge: 500 recipients. Preview tables show the first 100 rows. Downloads include all rows.
CSV downloads prefix cells that could be spreadsheet formulas with an apostrophe, including negative numbers. Check types when importing. JSON and draft exports preserve the original text. UTF-8 and comma-separated CSV only.
Import is kept in this page's memory. The original profile file is unchanged.
Preview / results
Enter your details on the left to prepare your result.