Set the maximum size each part is allowed to be, and a large PDF is divided into a series of smaller documents that all satisfy that limit. Each part is a valid PDF you can open and send on its own.
This solves the common problem of a mail server or upload form that rejects anything above a fixed size: instead of failing, you get parts sized to pass.
Everything is processed on your device, so a confidential document is never copied to a third-party server just to be divided up.
How to use it
Add the PDF you want to break up.
Choose how to split it: by page ranges you type, into fixed-size chunks, or one file per page.
Press Split — the pages are copied across without being re-rendered, so nothing is degraded.
Download the parts as a ZIP, or each one individually.
Supported formats and limits
Input
PDF (any version)
Output
Several PDFs, or a ZIP of them
Split by
Page ranges, every N pages, or one file per page
Quality
Lossless — pages are copied, not re-encoded
Where it runs
In your browser; nothing uploaded
Not for: Reducing file size — splitting divides the pages up but the total size stays about the same; use the compressor for that.
Frequently asked questions
Are my files uploaded to a server?
No. This conversion runs entirely inside your browser using your own device’s processing power. The file never leaves your computer or phone, which is why it also works when your connection drops.
Can I split at specific page numbers instead of by size?
This tool divides by size limit, which is what upload restrictions require. To pull out particular pages, extract the range you want and save it as its own document.
Do the parts lose quality?
Splitting alone does not change page content. Quality is only reduced if the size limit forces compression to meet your target.