If you need to change page sizes within PDFs, you can use the “Set page geometry boxes” Fixup. This Fixup can even be applied to only even- or odd-numbered pages.

First, we call up the list of Fixups and create a new Fixup.

Now, in the list of available Fixups, select “Set page geometry boxes” and configure it accordingly.

In this specific example, we will add +10 mm to the left and +5 mm to the right of even-numbered pages. For odd-numbered pages, we will add +5 mm to the left and +10 mm to the right.

By default, distances are measured in pt; this should be changed to mm.

So that we only have to enter one detail for both longer and shorter pages (for even and odd pages), we will use variables.

To add variables, click on the orange triangle and select “New variable...”.

Please note here that variable names must not contain spaces.

The finished Fixup should look like the one shown here.

There are as many steps for long edges as for short edges.

The finished profile is also attached to this tutorial, making it easy to import.