Help · Layout, layers & pages
Change the page size
You can change the size of a page at any point, including after it is full. Everything on it is stored as a proportion of the page rather than as pixels, so nothing jumps out of place — the whole layout rescales with the page.
Steps
- Click Page Setup in the left rail.
- Under Page size, type a Width and a Height.
- Pick the Units: inches, cm, mm, picas, points or pixels.
- Click Apply size to this page.
What moves and what does not
Positions are proportional, so nothing moves relative to the page. An element a third of the way down stays a third of the way down.
The shape of the page does change things. Going from portrait to landscape stretches the layout into the new shape, because a fixed proportion of a wider page is a wider distance. Expect to nudge a few things afterwards. ⌘Z steps back if it is not what you wanted.
Photographs get a new effective resolution. Making a page bigger makes every photo on it bigger in inches, which lowers its DPI. Check the badge on a selected photo afterwards — why a photo prints soft explains what it means.
Margins and bleed
The same panel holds them.
- Margin guides — type a number for each edge, or tick Same on all sides and type once. They are guides only: they never print and nothing clips to them.
- Bleed (print) — extra paper outside the page for a commercial printer to trim into. See Bleed and margins for print.
- Show margin guides, Show bleed guides and Snap to margins switch the on-screen behaviour without changing the numbers.
> Note > The page resolution — 72, 150 or 300 ppi — is set when a project is created and cannot > be changed here. If you built something at 72 ppi for screen and now need it for print, > start a new project at 300 ppi and rebuild, rather than scaling this one up. [VERIFY]
Changing how pages are shown
Further down the same panel, Page view sets whether you see one page at a time (Single page), pairs (Two up), or a book where the first and last pages stand alone (Book). This is a viewing choice — it changes nothing about the file.