Split PDF by size to fit an attachment limit
Set a maximum size and the document is cut into parts that each stay under it.
How to split by file size
- 1
Open the file
The document that is too big to send.
- 2
Set the limit
In megabytes — 25 MB for most mail, less for upload forms.
- 3
Split
Each part comes out under the limit, in one ZIP.
Private by design
Your files are processed on your own device and never uploaded to a server.
Fast
No waiting for uploads or downloads. Results are ready in seconds.
Free, no signup
Use every tool without creating an account or adding a watermark.
Frequently asked questions
One page is bigger than my limit.
Then it cannot be split any further. Compress the document first and try again.
Are the parts exactly the size I set?
They are at or under it. Parts end on a page boundary, so sizes vary a little.
Where is my file processed?
On your own machine. The tool is code that runs inside your browser tab, so the document is never sent to us and never sits on a server waiting to be cleaned up.