Organise · 2 tools
Organise the pages of a PDF
Two operations that move pages between documents without touching the pages themselves. Both run in this browser tab, so the documents you are rearranging never leave the machine in front of you.
The tools
What these tools actually do
A PDF is a container: a page tree pointing at page objects, each carrying the fonts, images and vector drawings that page needs. Merging copies those page objects into a new container in the order you choose. Splitting copies subsets of them into several new containers. Neither operation re-draws anything, so a merged or split document is exactly as sharp as the file it came from and its text is still selectable, searchable and readable aloud.
Page ranges are the part people miss
Both tools take ranges, and that is usually the shortcut. Merge can take pages 2 to 5 of one document and all of another in a single operation, which saves a split followed by a merge. Split treats each range you write as its own output file, so 1-3, 4-8 gives two documents rather than one document of eight pages — and it shows you the exact list of files before it builds any of them.
Two things that travel badly
The document's metadata does not travel at all: a merged or split file has no title, author, producer or timestamp, not even from the first source. That is deliberate, because a bundle that quietly inherits one source's author is a small privacy leak nobody asked for. And a PDF that carries a password cannot be read without it, by these tools or any others, so an encrypted source has to be opened and saved unlocked before it can be joined or cut. The tool names the file rather than failing vaguely.
What is not here yet
Rotating, removing, extracting and reordering pages, page numbers and cropping all belong in this group. None of them is built yet, and none of them is listed as though it were: a tool appears here when it works and can be checked.