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CSV Splitter
Split a large CSV into smaller files by row count while preserving the header. Free browser-based tool with no upload, installation, or sign-up.
Select fileor drop files here
Files stay on your deviceUp to 100MB per fileNo account needed
Help with this tool
Is splitting CSV files with PDFPilot really free?
Yes. CSV Splitter is completely free to use, with no sign-up or account required.
Are my files uploaded to a server?
No. The splitting runs entirely in your browser. Your file is never uploaded to PDFPilot's servers.
Does every output file include the header row?
Yes — each split file repeats the original header row, so every part is a complete, valid CSV you can open on its own.
How are the output files downloaded?
As separate file downloads (split-part-1.csv, split-part-2.csv, and so on) triggered one after another, not as a single zip archive.
What if my file has a header but no data rows?
You'll get a clear error rather than an empty split — there's nothing to split if there's no data beneath the header.
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