The Crop Pages dialog box is where you can adjust the visible page area. This can help you create consistency within a PDF composed of pages of different sizes.
Cropping does not reduce file size because information is merely hidden, not discarded.
When you prepare a PDF for
printing, you can change the Art, Trim, and Bleed areas for a PDF
page in the Crop dialog box. If you want to see indicators of these areas
in the document pane, select the Display Art, Trim, Bleed Boxes
option in the Page Display Preferences. (Choose Edit > Preferences
(Windows) or Acrobat > Preferences (Mac OS), and select Page
Display under Categories.)
Crop empty areas around page content
Crop one or more pagesBecause the Crop property is selected by default, the margin values that you specify determine the final Crop boundary. The dialog box displays each selected property as a differently colored box in the preview area. Select Show All Boxes to preview all properties at once. Select each property that you want to adjust.
Crop a page with the Crop tool
Crop Pages dialog box settings
Undo croppingCropping a PDF does not reduce file size because information is merely hidden, not discarded. By resetting the page size, you can restore the page and its content to its original condition.
Document > Crop Pages.
Crop Pages from the Options menu on the Pages panel.