Image sizes are used by authors to resize images on a page.
Manage Custom Sizes
To add a new Image Size go to Administration -> Content -> Assets -> Image Sizes. The following view will be presented:
1. Click Create New Image Size. The following view will be presented:
2. Edit/configure:
Name
Enter an appropriate name for the size.
Width
Enter an appropriate value.
Height
Enter an appropriate value.
Crop
Crop locates a 'window' at the supplied dimensions around the centre point of the image. This area of this window is presented when the Asset Size is selected.
Share Globally?
If required, check to allow the image size to be used on other sites in the installation.
3. Click Save.