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Split PDF by file size

Split a big PDF into parts under a size limit, like 10 or 25 MB for email.

  • Free
  • No sign-up
  • Works on any device

About Split PDF by file size

Divides a large PDF into several parts that each stay under a size you set, such as 10 MB or 25 MB, the typical attachment limits of email services. Pages are never cut in half; the split falls between pages. A single page heavier than the limit will still exceed it.

How to use Split PDF by file size

  1. Choose your PDF, or drag and drop it here. You can try the sample first.
  2. Make your changes and check them in the preview.
  3. Download the new PDF. Your file never leaves your device.

Why use this tool?

Also known as

Frequently asked questions

Why is one part still bigger than my limit?

A single page can be larger than the limit on its own, for example a full-page high-resolution photo. Compress the PDF first, then split it again.

Is Split PDF by file size free?

Yes. Split PDF by file size on Toolipedia is free to use, with no sign-up and no watermark.

Is it safe to use?

Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.

Does it work on my phone?

Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.

Do I need an account?

No. Just open the page and use the tool. There's no sign-up and no email needed.

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