Split a PDF by file size
Cut a large PDF into parts under 5 MB, 10 MB or any limit you set — without recompressing anything.
Drop a PDF file here or click to browse
Stays on your device — nothing is uploaded
How do I split a PDF by file size for free?
Open PDFkitt's Split PDF by Size tool (pdfkitt.com/split-pdf-by-size/): choose the PDF, set the limit, split, then download. It is free, needs no account and adds no watermark, and it runs entirely in your browser — the file is never uploaded to a server.
- Price
- Free — no trial, no paid tier, no watermark
- Account
- Not needed
- File upload
- None — processed on your device, in the browser
- Input
- PDF file
- Limits
- No daily quota and no file-count limit
- Works on
- Windows, macOS, Linux, iPhone, iPad and Android, in any modern browser
Updated · by the PDFkitt team
When compressing is not an option — the pages must stay exactly as they are — splitting by size is how you get a 60 MB scan through a 10 MB email gateway. The tool groups consecutive pages into parts, measuring each part as it goes, so every file stays under the limit you set.
Because fonts and images shared between pages are copied into each part, sizes are estimated conservatively. The work happens on your device.
How to split a PDF by file size
- Choose the PDF Drop it on the upload card.
- Set the limit e.g. 10 MB.
- Split Parts are built and measured in your browser.
- Download Individually or as a ZIP.
Why use PDFkitt to split PDF by Size?
The file is processed inside your browser tab. Disconnect from the internet after the page loads and it still works.
No signup, no email, no daily quota, no page limit, no watermark. Use it as often as you like.
Phone, tablet or desktop, in Chrome, Safari, Edge and Firefox. Nothing to install.
Frequently asked questions
What if a single page is larger than the limit?
It becomes a part of its own; compress it separately with Compress PDF.
Are the parts recompressed?
No — pages are copied unchanged.
Is the file uploaded?
No. Page operations run inside your browser; the document never leaves your device.