---
title: CGPDFBox.trimBox
framework: coregraphics
role: symbol
role_heading: Case
path: coregraphics/cgpdfbox/trimbox
---

# CGPDFBox.trimBox

The page trim box—a rectangle, expressed in default user space units, that defines the intended dimensions of the finished page after trimming.

## Declaration

```swift
case trimBox
```

## See Also

### Constants

- [CGPDFBox.mediaBox](coregraphics/cgpdfbox/mediabox.md)
- [CGPDFBox.cropBox](coregraphics/cgpdfbox/cropbox.md)
- [CGPDFBox.bleedBox](coregraphics/cgpdfbox/bleedbox.md)
- [CGPDFBox.artBox](coregraphics/cgpdfbox/artbox.md)