Split by size
Break one PDF into parts that each stay under a size you pick.
- Zero-transmission processing
- No watermark
- Limited daily trial
- Unlimited on Pro
Drop your PDF here
or choose it from your files
Your files are never transmitted. Nothing is uploaded.
Before you start
- Set the limit you have to meet — an email cap or an upload portal — and every part stays under it.
- Parts are cut between pages, so no page is ever split across two files.
Good to know
- Accepts
- Files at once
- One at a time
- Transmission
- None — nothing is uploaded.
Chain it
Next, run Grayscale PDF → Compress PDF on the result back to back — nothing to download in between.
How to do it
Add your file
Add the PDF that is too big for wherever it has to go — an email attachment limit, an upload cap, a court filing system.
Set it up the way you want
Set the maximum size per part. The document is cut at page boundaries so that each piece lands under your limit.
Download the result
Download the parts, numbered in order. Send them in that order and the recipient can put them back together.
Questions about Split by size
- Should I split or compress?
- Compress first. A smaller single document is nearly always better than several parts, and Compress PDF takes a target size directly. Split when compression has already run and the file still will not fit, or when the limit is absolute.
- Why are the parts not all the same size?
- Because the cut has to fall between pages. A single page with a full-page photograph can be several megabytes on its own, so parts land under your limit rather than exactly on it.
- A single page is bigger than my limit.
- Then no split can help, because a page cannot be divided further. Compress the document first — that page almost certainly holds a large image, and reducing it is the only route.