Quick answer
Empty lines in CSV are allowed by RFC 4180 but some parsers treat them as a row with one empty field or skip them.
CSV Empty Line
Empty lines in CSV are allowed by RFC 4180 but some parsers treat them as a row with one empty field or skip them. Trailing newlines can also cause an extra empty row.
Common causes
- Blank line between data rows.
- Trailing newline at end of file.
- Parser expecting no empty lines.
How to fix
- Remove empty lines if your parser does not accept them.
- Normalize line endings (e.g. single \n) and trim trailing newline if needed.
- Validate with a CSV validator to see how your file is interpreted.
Examples
Bad
a,b 1,2 3,4
Good
a,b 1,2 3,4
FAQ
- Are empty lines valid in CSV?
- RFC 4180 allows them; some parsers treat as empty row or skip.
- Trailing newline?
- Common; some parsers add empty row, others ignore.
Fix it now
Try in validator (prefill this example)