Why split at all
Not every recipient needs the whole document. Splitting sends only the relevant pages — faster to open, and nothing confidential leaks along for the ride.
It's also how you get under an upload cap without compressing: a 200-page file becomes four files that each fit.
Choosing how to split
Split by range when you know the pages (e.g. 12–18). Split into single pages when you need every page as its own file.
To keep the original and pull a few pages out, Extract Pages is cleaner than splitting the whole thing.
After splitting
Reorder or recombine the pieces later with Merge PDF — splitting is never a one-way door.
Dropped the wrong pages? Delete Pages trims a file in place without a full split.
