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How to Split a PDF by File Size (Free)

Hitting Gmail's 25MB attachment limit? PdfWord's free split-by-size tool cuts your PDF into parts guaranteed under your chosen size — the only free tool that does this, running 100% in your browser.

Steps

  1. Upload your large PDF
  2. Choose the max part size (25 MB for Gmail)
  3. Click Split by Size — download all parts in one ZIP

Use the Free Split by Size Tool →

Frequently Asked Questions

How is the size guaranteed?

Pages are added one by one and every part is byte-measured before finalizing.

Which size should I pick?

25 MB for Gmail, 10 MB for strict corporate email, 100 MB for WhatsApp.

Is it free?

Yes — free, no signup, files never leave your device.