Learn in this Article,
- how to set Page Boxes for the Print Item,
- how to adjust the size of the Print Item to the TrimBox and
- how to mask a Print Item based on the Dieline.
1. Introduction
For correct positioning of the Print Items in the Imposition, the PDF Page Boxes, especially the TrimBox and BleedBox, must be set for each print file. To do this, the print data must be adapted to the specified sizes, the TrimBox must be derived from the Dieline or the Page Boxes must be set manually.
2. General
The Fixups listed below are located in the selection menu Edit Page Geometry [1], which you can find in the footer of the Document Information area in the Print Data tab [2]. These Fixups are also located in the Data Preparation tab [3].
Using the Fixups in this group, the Page Boxes for the print files can be set to the correct position. It is possible to set the TrimBox to an existing Dieline and the BleedBox based on the TrimBox. The Bleed can be set based on an existing Dieline, and the content of a Print Item can be scaled in absolute terms or using a percentage. Find additional Fixups which address these topics with the search terms TrimBox, BleedBox, CropBox, MediaBox, and by activating the Scale radio button in the action panel in the Data Preparation tab.
Figure 1: The Print Data tab with the opened menu Edit PageBox
3. Fixups in the Edit Page Geometry Group
There are currently six Fixups available in the Edit PageBox group. These are briefly described below.
3.1. Clip Print Item with Additional Bleed
The aim of this Fixup is to clip the print item using the entered spacing along an existing Dieline on the outside, as well as the inside. The TrimBox can be set to the selected Dieline in the process.
Figure 2: The Dialog Clip Print Item with Additional Bleed

For information on how it works and a description with a corresponding sample file, please refer to the description.
3.2. Resize TrimBox
The aim of this Fixup is to adjust the current dimension of the TrimBox to work with exact sizes in production. All other existing Page Boxes are not affected by this Fixup, unless the size of the TrimBox moves beyond that of the Media- or BleedBox. In this case, the Media and BleedBoxes are adjusted accordingly.
Figure 3: The dialog Resize TrimBox Fixup

For information on how it works and a description with a corresponding sample file, please refer to the description.
3.3. Resize TrimBox and set Bleed
The aim of this Fixup is to adjust the size of the TrimBox for production and to set the BleedBox for the existing Bleed.
Figure 4: The dialog Resize TrimBox and set Bleed

For information on how it works and a description with a corresponding sample file, please refer to the description.
3.4. Scale Page Content – Width and Height
The aim of this Fixup is to scale the content of a page to a certain size with regard to the TrimBox. How the content is adjusted can be selected in Scale Options.
Figure 5: The dialog Scale Page Content – Width and Height

For information on how it works and a description with a corresponding sample file, please refer to the description.
3.5. Set Page Boxes
The aim of this Fixup is to set/adjust the Page Geometry Boxes: MediaBox, TrimBox and BleedBox, for a Print Ite to determine the size and the position of the three Page Boxes.
Figure 6: The dialog Set PageBoxes

For information on how it works and a description with a corresponding sample file, please refer to the description.
Fixup isn't available in Fixup Chain
Note that this Fixup isn't available for use in a Fixup Chain! To carry out similar tasks in a Fixup Chain use the Fixup Set Page Boxes based on TrimBox instead.
3.6. Set TrimBox to the Dieline
The aim of this Fixup is to set the TrimBox to an existing Dieline in the print file and the BleedBox at a certain distance from the TrimBox.
Figure 2: The dialog Set TrimBox to the Dieline

For information on how it works and a description with a corresponding sample file, please refer to the description.
Article update: Workflow 1.21.0 – 07/2025