Split by SizeFree Account
Split PDF into parts under a maximum file size. Free account required. Secure and fast.
How to Split by Size
Upload your PDF
Set maximum file size per part
Click 'Split'
Download the ZIP
Frequently Asked Questions
1What size limits can I set?
Set any maximum file size from 1 MB to 100 MB per part. Common choices: 10 MB for email, 25 MB for Gmail.
2How are pages divided?
Pages are grouped sequentially until the size limit is reached, then a new file begins. No page is split mid-content.
3Can I split for email attachment limits?
Yes. Set the limit to your email provider's attachment size (e.g., 25 MB for Gmail, 10 MB for Outlook) and each part will fit.
4How many parts will my PDF be split into?
It depends on the original file size and your chosen limit. The tool shows the number of parts before you confirm.
Why Use ZiaSign's Split by Size Tool?
ZiaSign's PDF size splitter divides large PDFs into smaller files that fit under your specified size limit. Perfect for splitting documents to meet email attachment limits (10 MB for Outlook, 25 MB for Gmail). Pages are grouped sequentially — no content is split mid-page.
Also known as: split pdf by file size · divide pdf by size · pdf size splitter · split large pdf for email
How-to guide
Prefer the step-by-step version first?
Step-by-step instructions to split pdf into parts under a maximum file size with ZiaSign.
Popular Ways to Use Split by Size
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Files are processed securely and automatically deleted after 1 hour so quick PDF jobs do not turn into storage risk.
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