In this article, you will learn
- how to set PageBoxes 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 Item in the Imposition, the PDF PageBoxes, in particular the TrimBox and BleedBox, must be defined for each print file. To achieve this, the print data must be adjusted to the specified dimensions, the TrimBox derived from the Dieline, or the PageBoxes set manually.
2. General
The following Fixups are available in the selection menu Edit PageBox [3], which can be found in the footer of the section Document Information and User-defined Fields in the tab Print Data [1] of the Print Item Detail View. Additionally, these Fixups are also accessible in the tab Data Preparation [2].
The following Fixups are offered in the Fixup group Edit PageBox:
- Set TrimBox to the Dieline,
- Resize TrimBox,
- Resize TrimBox and set Bleed,
- Clip Print Item with Additional Bleed,
- Scale Page Content – Width and Height,
- Set PageBoxes.
Further Fixups related to these tasks can be found in the tab Data Preparation [2] by selecting the search terms TrimBox, BleedBox, ArtBox, CropBox and MediaBox, as well as using the Action Scale.
Figure 1: Excerpt of the tab Print Data with the menu Edit PageBox expanded
3. Fixups in this Fixup Group
The Fixup Group Edit PageBox currently provides six Fixups. These are briefly described below.
3.1. Set TrimBox to the Dieline
The purpose of this Fixup is to position the TrimBox on a Dieline present in the PDF file and to set the BleedBox at a defined distance from the TrimBox.
Figure 2: The dialog of the Fixup Set TrimBox to the Dieline
The funcitonality and a detailed description, including a corresponding sample file, can be found in the description.
3.2. Resize TrimBox
The purpose of this Fixup is to adjust the size of the TrimBox in order to work with precise dimensions in production. All other existing PageBoxes are not affected by this Fixup unless the size of the TrimBox exceeds that of the MediaBox or CropBox. In such cases, the MediaBox and CropBox are adjusted accordingly.
Figure 3: The dialog of the Fixup Resize TrimBox
The functionality and a detailed descriptionn, including a corresponding sample file, can be found in the description.
3.3. Resize TrimBox and set Bleed
The purpose of this Fixup is to adjust the size of the TrimBox for production and to set the BleedBox at a defined distance from the TrimBox, based on the existing Bleed.
Figure 4: The dialog of the Fixup Resize TrimBox and set Bleed
The functionality and a detailed description, including a corresponding sample file, can be found in the description.
3.4. Clip Print Item with Additional Bleed
The purpose of this Fixup is to clip the Print Item at a defined distance along an existing Dieline, both outside and inside, while setting the TrimBox to the selected Dieline.
Figure 5: The dialog of the Fixup Clip Print Item with Additional Bleed
The functionality and a detailed description, including a corresponding sample file, can be found in the description.
3.5. Scale Page Content – Width and Height
The purpose of this Fixup is to scale the content of the page to a specific size relative to the TrimBox. How the content is adjusted can be selected in the Scale Options.
Figure 6: The dialog of the Fixup Scale Page Content – Width and Height
The functionality and a detailed description, including a corresponding sample file, can be found in the description.
3.6. Set PageBoxes
The purpose of this Fixup is to set the PageBoxes for a Print Item – MediaBox, TrimBox, and BleedBox – based on a selected starting point, thereby defining both the size and position of these three PageBoxes.
Figure 7: The dialog of the Fixup Set PageBoxes
The functionality and a detailed description, including a corresponding sample file, can be found in the description.
Fixup not available in a Fixup Chain
Please note that this Fixup cannot be used within a Fixup Chain! However, you can achieve similar results within a Fixup Chain by using the Fixup Set PageBoxes based on Final Size.
Article update: Workflow 1.21.2 – 01/2026