Split PDF by File Size
Split large PDF files into smaller chunks by target size or page count.
AZ2PDF Split by Size is a free, high-speed online utility designed to split large pdf files into smaller chunks by target size or page count. Operating securely in volatile RAM memory with automated 5-minute permanent file deletion, your documents remain private without requiring user accounts or software installation.
High-speed secure cloud storage for businesses & developers.
or drop files here
Supports PDF up to 50MBHigh-speed secure cloud storage for businesses & developers.
How it works
Select Large PDF
Upload or drag & drop any oversized PDF document from your device.
Set Chunk Size
Specify target file size (MB) or maximum page count per chunk.
Download Split PDFs (ZIP)
Download a ZIP archive containing smaller PDFs divided to meet your limits.
Frequently asked questions
Is Split by Size on AZ2PDF completely free?
Yes, Split by Size is 100% free with unlimited usage, no registration required, no subscription fees, and zero watermarks.
Are my documents safe and private?
Absolutely. Files are processed securely in high-speed RAM and permanently purged after 5 minutes by our automated cleanup daemon.
What should I do if my file exceeds the 30MB instant processing limit?
For files exceeding 30MB, AZ2PDF automatically activates our asynchronous background queue. Enter your email address when uploading. Our server processes the document in the background and sends a secure, encrypted download link valid for 24 hours.
High-speed secure cloud storage for businesses & developers.