Measuring Scooter
October 28th, 2005
To illustrate a bug in Apple’s Preview 3.0 concerning the display of image dimensions, I will use the Man of the Hour, I. Lewis “Five Indictments” Libby:
As you can see in the Document Info window, the dimensions are 200 x 297.
Now I crop the image a bit and save the changes to disk…
The image dimensions don’t update until the image is reopened.
How cropping the image increased the file size is a mystery to me.
it increased the file size because it re-encoded the jpeg at a higher quality than it was originally. Some programs have a jpeg crop that can avoid this by only cropping the 8×8 blocks jpeg images use.