Split PDF Online Free — Your Files Are 100% Secure
Split a PDF by page ranges, every N pages, or one file per page — online and free. Secure and private — no signup, no watermark, no file limits.
Drop PDF files here
or
Max 25 MB per file · Secure and private — files are never stored
How it works
- 1Drop the PDF you want to split into the box
- 2Pick a mode: extract ranges, split every N pages, or burst all pages
- 3Click "Split PDF" — everything happens on your device
- 4Download the PDF, or the zip with all output files
Frequently asked questions
Are my files uploaded to a server?
No. FileCPU runs entirely in your browser. Your PDF is read into memory, split locally, and handed back to you as a download. Nothing is ever transmitted or stored.
How do I write page ranges?
Use commas between selections and hyphens for spans: "1-3, 5, 8-10" creates three groups — pages 1 to 3, page 5, and pages 8 to 10. The order you write is the order you get, and repeating a page is allowed.
What is the difference between the three modes?
"Extract ranges" puts the pages you pick into one new PDF. "Every N pages" cuts the document into chunks of a fixed size. "Burst all pages" turns every page into its own PDF, delivered together as a zip.
Why is my output bigger than the original?
Pages that share fonts or images carry a copy of those resources into each output file, so split results can add up to more than the source. That is normal for splitting — run the results through Compress PDF afterwards if size matters.
How many pages can I split?
Documents up to 200 pages and 25 MB per file. The limits exist because all the work happens in your browser's memory.
What about password-protected PDFs?
They cannot be split. Unlock them first (with the password you own), then add the unlocked copy. FileCPU tells you clearly instead of failing silently.