Find Info About Your Image
This window will tell you the pixel lengths. Right click on the image
GIMP 2.4, the “Info Window” has
been superseded by
from the image window. I got another image from APOD
It is pretty big. (Not as big as Saturn though) You can see in the
dialog below, it is 2241 x 1548 pixels.
Dialog for Image Info
If you are just making a square out of a rectangle, like in the
Section 4.4, “
Crop An Image
you need only to open the dialog and find the lesser length and use
that as described. Since this is very little information, and definitely
not enough to fill the space between the menu thumbnail and the dialog
screenshot in my layout, I thought I would run through some calculator
exercises that might help you to meet your image needs.
It is nice to have images appear on a browser window as a photo would.
Photos online appear to be 4x6 inches when scaled to 288x432 pixels (72
dpi for many monitors). There is a problem, however, if you try to scale
this image. The ratio of width to length of the original does not match
the ratio of the photo. So, to make the scaled image the correct size
crop 10 pixels from the height. For the sample image, it was best to
crop 10 pixels off from the top. The final image should
“appear” as a 6x4 inch photo on most monitors.
Problem Solved by Cropping
There will be problems whenever mixing scanned photos with digital
photos and also with scanned negatives. Modern film developing machines
automatically crop one half of an inch off from each image -- the rumor
is that the photo printing machines match a certain style of camera
view. If you are preparing an image to be printed on a machine like
this; or if you are planning on a gallery where the images are from
different sources, some intelligent cropping to fit the best size for
the medium you have chosen will be a plus. If this is confusing; please
blame the photo printing industry and not GIMP.
You can change the Resolution of your image as well, using the same
methods as we used in the Scale, although, in my somewhat limited use,
the issue is more about how many pixels. Let's say you want to get this
image printed at the photo lab. 300 pixels for every inch is preferred.
This original image will print easily as a 7 x 5 photo. 2241px/300ppi =
7.47 in. Get out your calculator for the short side. 1548/300 = _.
There is another brutal fact you should come to terms with if you are
new to graphics and computers. Just because it looks good on the screen
doesn't mean that it will print that nicely. I tried to emulate how this
image would appear printed at 300dpi. Sorry. There are some options, for
instance my friend printed images and then scanned them back in.
Actual printing result of example image