12 Replies Latest reply: May 5, 2008 9:29 AM by Keith Barkley
SteveRay Level 1 Level 1 (0 points)
I imported a photo into iPhoto that had been created in Photo Booth.

After some minor editing, I saved it in iPhoto as a JPEG.

I intended to use the photo as my 'ID photo' at a social networking website, but found I wasn't able to because the file size limit for such photos is 30K.

My photo is 128K.

*How can I get it down to 30K (in iPhoto or otherwise) -- without losing quality?*

Thanks.

MacBook 1.83 GHz, Mac OS X (10.4.11), Firefox 2.0.0.14 / Safari 3.0.4
  • LarryHN Level 9 Level 9 (70,530 points)
    How can I get it down to 30K (in iPhoto or otherwise) -- without losing quality?


    You can not - reducing size means removing information which means reducing quality

    You can export the photo and set the size as you want when you export - you can not change it within iPhoto

    BTW - 128 K is VERY small - 30K is tiny

    LN
  • Thomas Emmerich Level 4 Level 4 (3,485 points)
    You can reduce the size by attempting to email the photo. Select the photo and click the email button at the bottom of iPhoto. A dialog box comes up allowing you to reduce the size. It even shows you the resulting size. When you click the "Compose" button iPhoto will open a new email message with the reduced size image.

    If you're using Apple Mail, you can right-click the image in the new message and copy or save it to disk.

    I tested this in iPhoto 08. Since you posted your question in the iPhoto 5 forum I assume that's the version you're using. It should still work in that version although I don't know if it will show the resulting size or if the button names are the same.
  • Keith Barkley Level 5 Level 5 (5,765 points)
    What are the pixel dimensions of the photo? (how many pixels wide and high)

    I suspect you will want to do two things, reduce the pixel dimensions to something like 640 x 480 and lower the JPEG quality. Since this is for an "ID photo" that is usually pretty small, you can throw away quite a bit of "quality" and have things still look pretty good.
  • LarryHN Level 9 Level 9 (70,530 points)
    Thomas

    Just wondering why you would go through that complicated set of steps (which only give you four choices of size - actual, large, medium or small) rather than simply exporting to exactly the size you want?

    LN
  • SteveRay Level 1 Level 1 (0 points)
    Keith Barkley wrote:
    What are the pixel dimensions of the photo? (how many pixels wide and high)


    How can I determine that -- it doesn't appear in 'Get Info' (not that I'd expect it to).

    I assume there's a pixels 'standard' that Photo Booth uses (?)

    (I didn't change anything directly related to pixels once I brought the photo into iPhoto -- I don't know whether the 'editing' I did would have changed the number of pixels of the photo from what it was as created in Phone Booth.)

    Re: lowering the JPEG quality, are you referring to a method other than those mentioned above (the simplest of which seems to be just using iPhoto's 'Export' function) - ?

    Thanks.
  • Thomas Emmerich Level 4 Level 4 (3,485 points)
    Larry,

    I'm wondering myself what I was thinking. Maybe its because my son was asking me questions at the same time and only a small part of my brain was in use in answering the question.
  • sunshine37 Level 1 Level 1 (0 points)
    Do you know how to reduce the pixels on a photo? I have a telephoto lens and the file sizes are huge and almost impossible to upload to my web gallery in any large numbers...can you help?
  • LarryHN Level 9 Level 9 (70,530 points)
    Sunshine

    welcome to the Apple user discussion

    Did you read this thread before you hijacked it?

    You can export the photo and set the size as you want when you export - you can not change it within iPhoto


    BTW - having a telephoto lens does not increase nor does it increase the pixel size of a digital photo - that is set by your camera settings

    For the web gallery (A new feature in iphoto 8 - you are posting in the iPhoto 5 forum) if you do not allow downloads then iPhoto only uploads small sizes


    LN

    Message was edited by: LarryHN
  • SteveRay Level 1 Level 1 (0 points)
    LarryHN wrote:
    How can I get it down to 30K (in iPhoto or otherwise) -- without losing quality?


    You can not - reducing size means removing information which means reducing quality

    You can export the photo and set the size as you want when you export - you can not change it within iPhoto

    BTW - 128 K is VERY small - 30K is tiny


    Having now tried this, it appears that what you meant by 'size' was the resolution.

    Other than 'trial-&-error' is there any way I can quickly determine what resolution will get the *_file size_* down to 30K?

    (Yes I know 30K is tiny -- the photos are small thumbnails.)

    Thanks again.
  • LarryHN Level 9 Level 9 (70,530 points)
    Other than 'trial-&-error' is there any way I can quickly determine what resolution will get the file size down to 30K?


    No

    But as a first guess if you cut each dimension in half you should cut the photo size to about 1/4 which is real close to 30K for a 128K photo

    LN
  • SteveRay Level 1 Level 1 (0 points)
    LarryHN wrote:
    Other than 'trial-&-error' is there any way I can quickly determine what resolution will get the file size down to 30K?


    No

    But as a first guess if you cut each dimension in half you should cut the photo size to about 1/4 which is real close to 30K for a 128K photo


    Close but no cigar. That only got it down to 48K.

    A few minutes later . . .

    This gets more interesting by the minute.

    If I select a resolution less than what results in a 36K file, I end up with a zero-byte file.

    Is that iPhoto telling me it can't reduce a Photo Booth file down to less than 36K?
  • Keith Barkley Level 5 Level 5 (5,765 points)
    Simply click on the photo and look at the information box in the lower left. It will give the pixel dimensions as well as other info about the photo.

    However, it looks like Larry has done a good job answering your question.