You can integrate static images with the image item.
Image
Select an image file in the file browser. The image can be saved in the layout (Backup picture in the layout file). If you move the project, the image is also available, even if the original is no longer accessible in the path. The original image cannot be restored from the layout.
Appearance
The transparency can be set with the slider.
The image can be stretched to the size of the chart or it can be displayed in the original size. If the original image is bigger than the current diagram, the image is only shown partially. The size can be specified manually with the desired width and height (in pixel) as well as a X/Y offset (position) which refers to the left edge at the top.

