how to check the number of pixels in a photo

If they're just files in a folder and you're using Finder, right click the picture and choose Get Info. If you're looking in iPhoto, there's an Info button at the lower right that will tell you.

If you have a ton of pictures in folders and you need this info regularly, take a look at Pathfinder. It lists the picture size (like 840 x 600 or whatever) right under the filename. It's like Finder on steroids.

www.cocoatech.com

Or any of the top Photo Editing Software will allow you to know the number of Pixels are in each.

(Photoshop)

compress it?

Denise,

Just choose Custom in that same area.

I have an image thatis over 3MB and it needs to be under this size to send writes Denise.

PREVIEW is the ideal program to do this, in about 10 seconds.

Take picture ( in iPhoto or finder ) and drag-drop it in preview

in preview, click "file"

then "save as".

( be sure the format window shows "jpeg" )

Adjust the compression you want with the sliding control ( when you release it, the size of the resulting file is shown, you can reclick and readjust ).

Just add a letter ( or a number ) at the end of the file's name so it will be placed right besides the original ( in iphoto ). Click "save". All this has been done in less than 10 secs.

To compare the two pictures side by side, click on the word "preview" up there, then "preferences" then " open each file in its own window ".

In iphoto pick 2 ( or more ) pictures , drag-drop them in preview. Adjust the sizes of the resulting windows. Zoom each picture independantly .

INFO on each of these pics: click "TOOLS" then "SHOW INSPECTOR" ( note there are 4 "folders" there.The second one will give all the EXIFS of the source camera ).

PREVIEW is a much overlooked and underestimated "app" ! How many Apple fans know you can copy out your dog with it and paste it on a picture of the moon ?

Tip o' the hat to the Apple engineers for this simple, smooth running yet powerful program.

P.S. "copy out your dog" meant taking its silhouette out of a picture using , in the SELECT tools, the "lasso" or "smart lasso" tools.