Resize images for pixel height/width and for file size

Select the pic in the iPhoto Window and go File -> Export

In the resulting dialogue select the Kind: Jpeg and then you can select the amount of JPEG compression at the Jpeg Quality dropdown and this will affect the filesize and at ‘Size:’ you can select the W x H dimensions.

Complete the export to the desktop where iPhoto will create a copy with your changes and then upload those.

Regards

TD

Thank you! This has been a very frustrating experience. I have been trying to upsize my files for large screen ( 8x10 feet screen) presentation but when the files are sent and then opened for projection they are too small for larger presentation format.

Your suggestion is exactly what I needed.

Terence,
Our social/competitive club requires digital images be submitted at 144 dpi and no more than 1024 pixels per side. Your solution to this question clearly answers the 1024 issue but I can't find a method to specify 144 dpi. The original image comes in, from the camera, at 72 ppi according to Adobe Bridge. (Yes, I'm using both dpi and ppi in this question -- I guess the question really is, how can I make iPhoto change from 72 ppi to 144 dpi?)
Thanks, in advance.

To double the size of the dpi, halve the area of the pic.

Think of it this way: If you have an image that is 2000 x 1000 pixels and that prints to 10 x 8. Well to double the dpi you’ll need to cram those pixels into 5 x 4.

Regards

TD

Terence,
Thanks for your prompt response, but I haven't yet made myself clear (this community is wonderful, but sometimes, like email, it's just not as good as sitting down together...unfortunately, there seems to be an ocean in between). But, to go on: I bring an image in from my camera and the metadata is:
File Size: 3.47 MB
Dimensions 3648 x 2736
Dimensions (in cm) 128.7 cm x 96.5 cm
Resolution 72 ppi

I need to re-size the image (without cropping) to
Dimensions 1024 x 768 (768 is a variable; 1024 is the maximum on the longest side)
Resolution 144 ppi.

When using iPhoto 8 or 9 I File | Export as a JPEG Quality Maximum Size Custom 1024 px and it re-sizes properly, but the resolution doesn't change from 72 ppi (I have to use Adobe to see the resolution). It makes no difference whether I specify Maximum quality or High or lowest, the ppi doesn't change.

Your continued help will be greatly appreciated.

Bert

Thanx from my part as well!
This was also what I was looking for guys.

Cheers

See my answer to your duplicate question in the iPhoto '09 forum

LN