Split PDF by File Size Free — Break Large PDFs Into Smaller Parts
Email attachment limits, upload forms, messaging apps — big PDFs hit size walls everywhere. Upload your PDF, pick a maximum part size, and this tool splits it into sequential parts that each stay under your target. Every part is a real, openable PDF. Everything happens on your device; files never leave your browser.
Split PDF by File Size
Break a big PDF into parts that each fit under your size limit.
100% Free Forever
No Sign-up
No Credit Card
Private — files never leave your browser
Unlimited Use
1 Add your PDF
Drag & drop a PDF here
or click to browse — one PDF at a time
2 Max part size
Every part will stay under this size (a single page can never be split further).
3 Split & download
Working…
✅ Done — your PDF parts
How it works
- Drop in your PDF — the tool reads its size and page count instantly, in your browser.
- Pick a maximum part size (5 MB for email, 10 MB for most upload forms, 25 MB for Gmail) or type your own.
- Hit Split PDF — the tool measures each page group and divides the document so every part stays under your target. Download each part separately.
Everyday uses
- Email attachments — break a big report into 5 MB parts that sail through inboxes.
- Upload forms — fit job applications, visa documents, and school portals with strict limits.
- Messaging apps — share long PDFs in chunks friends can actually download.
- Cloud storage — split before syncing on slow connections so one failure doesn’t restart everything.
- Archiving — keep huge scans manageable by splitting them into dated parts.
Tip: 25 MB is Gmail’s attachment limit; most government and job portals cap at 10 MB.
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