Urgent help needed: add transparency to image

Discussion in 'Mac Apps and Mac App Store' started by MacNeXT, Jun 14, 2005.

  1. MacNeXT macrumors 6502

    Joined:
    Jun 21, 2004
    #1
    Hi

    I'm making a keynote and I want to use some images that are JPEG with white background. Is it possible to convert the white background to transparent? I think I need some kind of flood fill because white is also present in the image itself, only the surrounding white has to be converted.

    I don't have photoshop. Are there any free tools available for this? Any help is appreciated!
     
  2. MacDawg macrumors P6

    MacDawg

    Joined:
    Mar 20, 2004
    Location:
    "Between the Hedges"
    #2
    I don't believe that .jpg supports transparency (but I could be wrong).
    You may have to convert them to .gif and set the transparency.
    You may also need to fill the white you want to keep with a different color.

    Graphic Converter X should be able to help.

    Woof, Woof - Dawg
     
  3. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #3
    As noted above JPEG does not support opacity at all. Depending on your image GIF may not be a suitable option. Other options include TIFF or PNG which both support opacity and allow for photo-level colours.
     
  4. wheezy macrumors 65816

    wheezy

    Joined:
    Apr 7, 2005
    Location:
    Alpine, UT
    #4
    Go for PNG, better quality than a .gif, and Keynote will support it. JPEG does not support the transparency layer.
     
  5. emw macrumors G4

    emw

    Joined:
    Aug 2, 2004
    #5
    I think you can use GraphicConverter's Transparent tool to convert white areas to transparent. This app should be included on your Mac.
     
  6. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #6
    Pro line Macs only (i.e. PowerBook and PowerMac only).
     
  7. MacNeXT thread starter macrumors 6502

    Joined:
    Jun 21, 2004
    #7
    Thanks everyone! GraphicConverter did the trick.
     
  8. MacDawg macrumors P6

    MacDawg

    Joined:
    Mar 20, 2004
    Location:
    "Between the Hedges"
    #8
    Another satisfied customer!
    Love that Graphic Converter...

    Woof, Woof - Dawg
     

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