About CSV Cleaner
Parse real-world CSV including quoted delimiters, escaped quotes, and embedded line breaks, then clean rows and fields without uploads.
CSV Cleaner uses a real CSV parser, so quoted delimiters, escaped quotes, and line breaks inside quoted cells are handled as data. It can trim cells, discard empty rows, remove identical rows, and export normalized line endings.
How to use it
- Enter or select your source data.
- Adjust the available options and run the tool.
- Review, copy, or download the result.
Common use cases
- Prepare vendor exports for a spreadsheet or import job.
- Normalize comma, semicolon, tab, or pipe-delimited files.
- Remove repeated and blank rows from mailing or inventory exports.
Worked example
Upload a semicolon-separated export, trim cells, remove blank rows, and download CSV.
Limitations and responsible use
- Uploaded text and CSV files are limited to 20 MB to protect browser memory.
- Duplicate removal compares complete parsed rows; it does not deduplicate by a chosen key column.
- The cleaner validates structure but cannot infer whether a value is factually correct.
Frequently asked questions
Will commas inside quoted fields break the file?
No. Properly quoted commas and embedded line breaks are parsed as part of the field.
Does the CSV leave my computer?
No. Reading, parsing, previewing, and exporting all happen in the browser.