Split Excel files without uploading them anywhere
Payroll, sales by rep, client billing — the files most worth splitting are exactly the ones your company forbids you to upload to random websites or paste into AI chatbots.
The problem with "free online splitters"
Most online tools upload your file to their server, process it there, and let you download the result. Some keep the file for hours. For confidential data, that's a policy violation the moment you hit upload — regardless of what their privacy page promises.
Browser-local processing
ReportSplit runs entirely inside your browser tab. The file is read into your browser's memory, split there, and zipped there. There is no server that could receive it — you can watch the network tab in your browser's developer tools and see that nothing is transmitted. Your recipes and usage counter live in local storage on your machine.
What about AI chatbots?
ChatGPT and similar tools can split a spreadsheet — but you're uploading company data to a third party, formatting rarely survives regeneration, and you'll re-explain the task every month. For a recurring, confidential split, local + repeatable wins.