Split PDF

Split a long PDF into the pieces you actually need: one file per page, chapters by bookmark, fixed ranges, every few pages, odd and even pages for double-sided scanning, or parts that stay under an email or upload size limit. Pages are copied exactly as they are, and the PDF never leaves your browser.

How to use this tool

1. Choose the PDF you want to split.
2. Pick a split method, then fill in its setting — the ranges, the number of pages per file or the maximum size in MB.
3. Start the split and check the table of parts with their page ranges and sizes.
4. Download each part, or all of them as a ZIP.

Formula

Every N pages: number of parts = ⌈total pages ÷ N⌉. By size: each part takes as many consecutive pages as fit under the limit, measured by actually saving the part.

Ranges use page numbers from 1; “9-” runs to the last page and “5-3” lists pages in reverse. Each part is a new PDF that contains only the fonts and images its own pages use, so parts are usually much smaller than the original.

Example

A 25-page report split every 10 pages gives ⌈25 ÷ 10⌉ = 3 parts: report_1-10.pdf, report_11-20.pdf and report_21-25.pdf. Split with the ranges 1-3, 4-25 instead, it gives the cover letter and the report body as two files.

Splitting by bookmarks or by size

Bookmark splitting uses the top-level entries of the PDF’s outline — usually the chapters — and names each file after its chapter. Pages before the first bookmark become a part called “Start”. Size splitting is handy for email limits such as 10 or 25 MB; a single page bigger than the limit is saved on its own and flagged.