Upload a PDF

Select a PDF to split

Max 20 MB for smooth performance.

All processing happens locally in your browser. No uploads.
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Split PDFs instantly with client-only processing

Calcwise PDF Split lets you break documents into smaller PDFs without uploading to a server. Everything stays on your device for maximum privacy.

How to split your PDF

  1. Upload a PDF from your device.
  2. Choose split mode: all pages or custom ranges.
  3. Download each output file instantly.

Best results

  • Use PDFs under 20 MB for smooth processing.
  • Combine ranges if you want fewer output files.
  • Keep this tab open until downloads finish.
Note: PDF splitting happens locally in your browser. No files are stored or transmitted.

Frequently Asked Questions

Is my PDF uploaded anywhere?

No. Splitting happens locally inside your browser.

Can I split only certain pages?

Yes. Enter ranges like 2-4 or 7-9 to create separate PDFs.

Will it work on mobile?

Yes. The tool is optimized for touch and smaller screens.