Split PDF by Size
Split a large PDF into smaller files, each under your specified size limit. Perfect for email attachments and upload restrictions.
Drop your PDF here to split by size
Supported: .pdf (up to 100.0 MB)
Frequently Asked Questions
Why would I need to split a PDF by size?
Many platforms impose file size limits: email attachments (typically 25MB), job application portals (10MB), or document submission systems. Splitting your PDF ensures each part stays under the limit while preserving all content.
What size limit should I choose?
For email attachments, 25MB is the most common limit. For job portals and forms, 10MB is safer. If you're unsure, 25MB is a good default. The tool will create as many parts as needed so each stays under your chosen limit.
Will the split files be readable independently?
Yes. Each part is a valid, fully readable PDF. You can open, print, or share any part independently.
Is it safe to split PDFs online?
With pdfprivately — absolutely. Everything runs in your browser. Your file never reaches any server. You can verify by disconnecting your internet after the page loads.