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CSV Validator
Check a table for uneven rows and empty cells before you import or share it.
Everything runs locally in your browser. Nothing is sent to the server.
Check
Looks consistent
- Rows
- 3
- Columns
- 2
- Detected delimiter
- Comma (,)
- Empty cells
- 0
What it does
Quickly check the shape of a CSV before importing it into a spreadsheet, database, or script. The tool detects common delimiters and flags rows with a different number of columns.
How to use it
- Paste CSV text.
- Choose a delimiter or leave automatic detection on.
- Review the row, column, and empty-cell counts.
Tips
- A different column count often means a missing delimiter or an unquoted comma.
- Empty cells are counted but are not treated as errors by themselves.
- The data stays in your browser.
FAQ
Is my CSV uploaded?
No. Parsing and validation happen locally in your browser.
Which delimiters are supported?
Comma, tab, semicolon, and pipe delimiters are supported.
Does this change my data?
No. It only checks the structure and creates an optional summary to copy.