CSV Cleaner helps you quickly clean up messy spreadsheet exports. Paste or load your CSV data, and the tool trims whitespace, removes blank rows, estimates column structure, and outputs a clean version — all without uploading a single file to any server.
name,city,score Alice,São Paulo,42 Bob,Recife,37
No. The tool works on the text you paste into the input and produces a separate cleaned output. Your original file on disk is untouched.
It handles simple to moderately messy CSV well. The parser splits on commas and newlines directly, so quoted fields containing commas or embedded line breaks may split incorrectly and need manual review after cleaning.
Yes — click the Download button to save the cleaned data as a .csv file, or use Copy to place it on your clipboard.
It trims leading and trailing whitespace from every cell and removes rows where every cell is empty. It does not deduplicate rows, fix data types, or reorder columns.
Each line is split on commas, and the column count shown is the highest number of cells found in any row — useful for spotting rows with missing or extra commas.
Yes, for typical exports without embedded commas or line breaks inside quoted values. Files with quoted multi-line cells (common in Excel exports with wrapped text) may need a spreadsheet app for full support.
There's no hard-coded limit, but very large CSV files (many thousands of rows) may slow down the browser tab since everything is processed in memory.
