Free File & Data Tools
CSV Cleaner
Trim whitespace, normalize line endings, remove empty rows, and optionally deduplicate CSV records.
What this tool does
A small browser parser preserves quoted delimiters while applying explicit cleanup choices.
Trim whitespace, normalize line endings, remove empty rows, and optionally deduplicate CSV records.
A small browser parser preserves quoted delimiters while applying explicit cleanup choices.
Use the tool
Clean CSV text locally
Paste CSV and choose delimiter, header, empty-row, and duplicate handling.
Paste CSV data
Clean rows appear here
Cells are trimmed, empty rows are removed, and optional exact duplicates are collapsed.
How to use it
Three quick steps
- 1Paste CSV and choose delimiter, header, empty-row, and duplicate handling.
- 2Preview and copy or download the cleaned CSV.
- 3Verify the result in its real production context. Complex malformed files, mixed encodings, and very large datasets may require a specialist data tool.
Worked example
Example: CSV Cleaner
Clean a contact export containing blank lines, padded cells, and duplicate rows.
FAQ
Questions about the csv cleaner
Practical details about using the tool and understanding its result.
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