CFImage - Resize Image
When using CFImage to resize an image, the related attributes (in addition to the standard CFImage attributes) are:

Height
Width

These attributes are both required and can be either in pixels (just the number) or in percentage (the number followed by the percent sign). In order for you to maintain the aspect ratio, you must do your own math if you use pixels. If you want to use percentages, then just use the same percentage for each attribute. (Note: When using the ImageResize() function, you don't need to include both values.)
Let's see it in action:

<!---
Take the modified image and resize it 75% of
it's original size.
--->
<cfimage
action="resize"
source="#objImage#"
height="75%"
width="75%"
name="objImage"
/>

<!--- Write the new image to the browser. --->
<cfimage
action="writetobrowser"
source="#AddImageInfo( objImage )#"
/>

When we run that, we get the image shown in Figure 5.

CFImage - Rotate Image
When using CFImage to rotate an image, the related attributes (in addition to the standard CFImage attributes) are:

Angle

Angle is the number of degrees to rotate the image in a clockwise fashion. There are two kinds of rotational actions: 90 degree rotations and non-90 degree rotations. Let's take a look at a 90 degree rotation in action:

<!---
Take the modified image and rotate it 180 degrees.
This will essentially flip the image up-side-down.
--->
<cfimage
action="rotate"
source="#objImage#"
angle="180"
name="objImage"
/>

<!--- Write the new image to the browser. --->
<cfimage
action="writetobrowser"
source="#AddImageInfo( objImage )#"
/>

This rotates the image by a multiple of 90 degrees (180 degrees), which will basically flip the image up-side-down, giving us the image shown in Figure 6.