A QUICK WALKTHROUGH
How to use this tool
- Load a CSV with the correct delimiter and header setting.
- Choose data records per part and whether to repeat the header.
- Split and download each part; the manifest lists each file’s record count.
How it works
Splitting happens after parsing, so quoted multiline fields stay together. The final file contains the remaining records, even when that is fewer than the selected batch size. Part names are sequential. The 100-part limit prevents accidental generation of thousands of downloads.
A practical example
Start with
Three data records; two records per part
What to expect
part-001.csv contains two data records; part-002.csv contains one. Repeated headers do not count toward the batch size.
Important considerations
A row-count limit is not a byte-size limit. Records can vary greatly in length. Inspect the resulting file sizes if an import has a strict megabyte cap.
5 MiB per input · 50,000 records · 200 columns. Input remains in page memory until you reset or leave. Copy and download actions are initiated by you. No tool input is sent to a processing service.
One more useful detail
Will a field with a line break be split?
No. A quoted newline remains inside its original CSV record.