What is this CSV slice & split tool?
A free, browser-based tool that either slices a row range out of a CSV (first N, last N, or N..M) or splits one big CSV into multiple smaller files by row count. Every output keeps the header row, and split files download together as a ZIP. It's ideal for sampling a lead export, grabbing a header preview, or breaking a huge list into import-sized chunks. Everything runs locally in your browser, so your data is never uploaded.
How to use it
- Upload a CSV file or paste it into the box on the left.
- Choose Slice range to extract head N, tail N, or a range N..M.
- Or choose Split into files and set the rows per file.
- Copy or download the sliced CSV, or download the split files as a ZIP.
Common use cases
- Grabbing the first 100 rows of a huge export to preview its shape.
- Splitting a lead list into import-sized batches for a CRM or ad platform.
- Pulling a specific row range (e.g. rows 500..1000) out of a big file.