OurPDF

Split PDF by Size

Break a large PDF into parts that each stay under a file size limit.

Runs in your browser · files never leave your device

How to use Split PDF by Size

  1. 1

    Choose your PDF (or drop it on the page).

  2. 2

    Enter the maximum size per part.

  3. 3

    Download the result (several output files are offered as one ZIP).

  • 100% in your browser – no upload
  • Free, no sign-up, no watermark
  • Works offline once loaded
  • Part of 67 private PDF tools

Questions & answers

Is Split PDF by Size free?

Yes, completely free with no limits on the number of files and no watermark.

Are my files uploaded to a server?

No. Everything runs in your browser on your own device. Your documents are processed locally and never leave your computer or phone.

Does Split PDF by Size work on mobile?

Yes. It works in any modern browser on Android, iPhone, Windows, macOS and Linux. Page Management tools also work offline after your first visit.

Break a large PDF into parts that each stay under a file size limit. OurPDF does this entirely inside your browser: nothing is uploaded, there is no account and no watermark.