📄
Split by Size
Split PDF based on file size (e.g., <10MB)
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What is Split by Size?
When a PDF is too large to email or upload, splitting it by file size creates chunks that each stay under the limit. PDFStream's size-based splitter divides the document into segments that target a maximum size per file.
Set the target size per output file. The tool splits at page boundaries, keeping as many pages as possible within the size limit before starting a new file.
Use cases: splitting a large archive for email attachment limits, dividing a document for platforms with per-file upload caps, creating manageable segments of a large scanned batch, or preparing a document for a submission portal with a file size restriction.
How-to
- 1
Upload file
Select the PDF.
- 2
Target size
Enter the maximum file size (MB) for each split part.
- 3
Split & Download
Download the split PDFs as a ZIP file.
Frequently Asked Questions
Is the result exactly the requested size?▼
Since we split by page, the result will be as close as possible to the target size, but may not be exact.
Can I meet email attachment limits?▼
Yes, e.g., setting it to 25MB helps meet Gmail's limit.
Is this tool free?▼
Yes.
Are files stored on your server?▼
No.
Can I use it on mobile?▼
Yes.
Is quality maintained?▼
Yes.
Is there a file size limit?▼
No.
How long does it take?▼
Seconds.
Can I download multiple times?▼
Yes.
What if an error occurs?▼
Check file encryption.
Last Updated: August 6, 2026
