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  1. #1
    3 Star Lounger
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    Image Resolution (Powerpoint 2003)

    Is there an easy method of changing 50 images in a presentation to a lower resolution - some are at 300 up to 600 - need to change to about 72. The faculty members presentation is taking for ever to load.

    Any suggestions?

    Thanks

  2. #2
    Plutonium Lounger
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    Re: Image Resolution (Powerpoint 2003)

    Select any image in the presentation.
    Select Format | Picture...
    Click Compress...
    Select "All pictures in document"
    Select "Web/screen" (which will result in 96 dpi)
    Make sure the check boxes at the bottom of the dialog are ticked (on).
    Click OK.

  3. #3
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    Re: Image Resolution (Powerpoint 2003)

    Hi Hans,

    That tip came in very handy for a presentation I'm working on right now - shrunk a file from 2.4 MB to 680 KB.

    The key in the above is that I'm still working on the presentation but I do have to print it. Will the compressed version print as well as the uncompressed version (where the images were jpg so it was already compressed)?

    Also, I'm still working on the presentation and will be adding more images. Of course I can compress each image as I add it. However, if I wait until I'm done and compress all images, will the compression work on all the images or just the uncompressed ones? I understood that trying to compress something already compressed could yield a bigger file or corrupt the picture.

    TiA

    Fred

  4. #4
    Plutonium Lounger
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    Re: Image Resolution (Powerpoint 2003)

    I suspect that images optimized for web/screen display will look less good when printed - printers have a much higher dpi (dots per inch) than a computer screen.

    If you change the dpi of a jpg file, quality will suffer a bit. How much depends on the ratio of the dpi values. Once an image has been compressed to 96 dpi, subsequent compress runs will simply skip that image.

  5. #5
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    Re: Image Resolution (Powerpoint 2003)

    Thanks Hans.

    I think I may go back to the uncompressed version (saved that before compressing). I have to do a print test to compare but that's for later.

    Fred

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