Four ways to split a PDF
Extract specific pages
Type the pages you want, such as 1-3, 5, 9-12, or click them in the preview (Shift-click picks a run). You get one PDF with just those pages, in the order you typed them, so 5, 1-4 also moves page 5 to the front.
Every page as its own PDF
Each page becomes a separate file. The files come packed in one ZIP so you download once.
Every N pages
Cut a long PDF into equal parts, for example every 10 pages, to fit upload limits or share chapters.
By sections
Write the parts you need separated by semicolons, for example 1-3; 4-9; 10-, and get one PDF per part. Leaving the end open (10-) goes to the last page.
Splitting doesn't change the pages
The pages you keep are copied as they are, with their text, links and quality. Just want to drop a few pages? Remove pages is quicker. Want to reorder or rotate pages too? Use Organize PDF.
Read more in How to merge, split and organize PDF pages.