Split PDF

about this tool

Five ways to cut

Drop a PDF and choose how to split it. Every N pages makes chunks of N with the remainder in the last part. Cut after pages takes the page numbers to cut after — 3, 7 gives 1–3, 4–7 and 8 to the end — sorted and deduplicated. Extract pages takes a page-range expression (2, 5-7, last, the same grammar as the merge tool) and makes one new PDF of those pages. Every page makes one file per page. Page groups takes any number of range expressions, one per line or separated by semicolons, and makes a part for each — the only mode in which pages may appear in several parts or in none, and the panel says which before you split.

The parts are listed with their file names and page labels as you type, and the button says what will happen: one PDF downloads directly, several are zipped in the browser. Names are report-part01.pdf, report-part02.pdf… with the index padded to the count, or report-pages-2_5-7.pdf for an extract.

What the parts contain

pdf-lib opens the source once and copies each part's pages into a new document: content, fonts, images and page-level annotations such as links travel with the page. Document-level structures — bookmarks, form fields, embedded files — do not, since they belong to the original as a whole. The original title is kept on each part, with "(2 of 5)" appended when there is more than one, and the producer is set to this site.

Nothing leaves the page

Opening, copying, writing and zipping all happen in your browser; pdf-lib loads on first use. There is no upload, no server and no file size limit beyond your device's memory. Encrypted PDFs are recognised and refused with the reason, since their pages cannot be copied without the password.

Limits

A very large document split into hundreds of parts holds them all in memory before zipping; on a phone, prefer fewer parts. There is no page preview here — the Organize PDF tool has thumbnails for picking pages by eye. Nothing is stored between visits.

To put pieces back together, use merge PDF; to reorder or rotate pages inside a single file without splitting it, organize PDF.

questions

How do I take a few pages out of a PDF?

Choose “extract pages” and type them — 2, 5-7, last — and a single new PDF with just those pages downloads. The other modes make several files: every N pages, cuts after pages you name (3, 7 gives 1-3, 4-7 and 8 to the end), one PDF per page, or any groups you write, one per line.

Is the PDF uploaded?

No. pdf-lib opens the file in your browser, copies the pages into new documents and writes them; several parts are zipped in the browser too. Nothing leaves the page, and the only size limit is your device’s memory.

What do the parts keep?

Each page comes with its content, fonts, images and page-level annotations such as links. Bookmarks, form fields and embedded files belong to the whole document and are not carried into the parts. The original title is kept, with “(2 of 5)” added when there are several parts.

Can a page be in two parts, or in none?

Yes, with page groups: 1-5 and 4-8 overlap and leave 9-10 out, and the panel says so before you split. The other modes always cover every page exactly once.

Why is my encrypted PDF refused?

Pages cannot be copied out of a password-protected file without the password, and this tool does not ask for one. Open it in a viewer that has the password, save an unprotected copy, and split that.