Split PDF by File Size

Break a PDF into chunks that each stay under a size you set — for email or upload limits.

Select a PDF

Click to choose, or drop a file here

How to Split PDF by File Size

1
Add your PDF
Drop it in.
2
Set a size limit
Enter the maximum size per file in MB or KB.
3
Download the zip
Pages packed into files that each stay under the limit.

Related PDF tools

Split PDFBreak a PDF into separate files by page range, or into equal chunks.Split PDF by BookmarkBreak a PDF into one file per top-level bookmarked section.Compress PDFShrink file size by re-encoding page images.Compress to Target SizeShrink a PDF down until it fits under a size you choose — for email or upload limits.

Split PDF by File Size — frequently asked questions

Does it compress the pages?+

No — it only groups pages. To make the file itself smaller, use Compress PDF or Compress to Target Size first.

What if one page is bigger than the limit?+

That page becomes its own file, and the tool notes it couldn't get under the limit for that one.

Do you upload my files to a server?+

No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.

Is there a file size limit?+

There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.