CSV Cleaner

CSV input

Cleaned CSV

id,Name," age"
1,Alice,30
2,"Bob, Jr.",27
3,Charlie,29
; comment,,
4,Dana,31

Summary

Rows: 6
Columns: 3
Removed empty lines: 1
Removed comment lines: 1
Header duplicates renamed: 0
Rows padded: 1
Rows truncated: 0
Output delimiter: ,
Newline: LF

Options

Parsing

Header rowSkip empty lines

Trim whitespace

Cleaning

De-duplicate headersAlign columns

Output

Quote all fields

About CSV Cleaner

CSV Cleaner standardizes messy CSV files: it trims stray spaces, removes blank and commented lines, normalizes headers, aligns column counts, and exports with your preferred delimiter, newline, and quoting rules.

What it fixes

Inconsistent spacing around delimiters.
Duplicate or poorly cased header labels.
Rows with fewer or more columns than expected.
Mixed newline styles across platforms.

Tips

Enable “Align columns” and choose “Pad short rows” to safely keep data while fixing structure.
Use a comment prefix to skip metadata lines (e.g., # or ;).
Export with Quote all fields when you plan to import into strict parsers.

Related Tools

About this collection

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What to expect

Inputs and results kept together
Layouts that adapt to smaller screens
Direct links for returning to a tool
No account needed for the listed utilities

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