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Background JPEG comes us grey checkered. How to make it white?

Oct 5, 2010 8:08 AM

I designed a logo in logsnap.com.

They sent me the JPEG file and I when I opened it the background was a light grey checkered. How do I remove this so it appears white?  I need to place this log in my website up against a white background.  I am using Photoshop CS4

 
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  • Currently Being Moderated
    Oct 5, 2010 8:28 AM   in reply to technistar

    Are you sure it's a JPEG? Those people offer EPS, JPEG, and PNG

     

    What you are seeing sounds like the way PS displays transparency but the JPEG format does not support transparency.

     

    If it is tranparency you will see that if you drag the logo on to a plain white canvas.

     

     

    If not, select the background with the Quick Selection tool and fill the area with white to see what happens.

     
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  • Currently Being Moderated
    Oct 5, 2010 8:40 AM   in reply to technistar

    Can you post the image file here?

     
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  • Currently Being Moderated
    Oct 5, 2010 10:01 AM   in reply to technistar

    That's because it has a transparent background.

     

    Itt's probably a PNG file!

     
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  • Noel Carboni
    23,488 posts
    Dec 23, 2006
    Currently Being Moderated
    Oct 5, 2010 10:39 AM   in reply to technistar

    FYI, the freeware tool Irfan View can detect misnamed files under some conditions.  I'll qualify this by saying I've not personally seen it identify a .png file named .jpg specifically myself, but it might well do so.  In any case, it's a nice tool to have in the toolbox.

     

    http://www.irfanview.com

     

    -Noel

     
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  • Noel Carboni
    23,488 posts
    Dec 23, 2006
    Currently Being Moderated
    Oct 5, 2010 10:47 AM   in reply to Noel Carboni

    I just tested it...  IrfanView does in fact detect exactly that condition.

     

    PngWarning.jpg

     

    On a completely unrelated front:  If the file isn't actually a misnamed file of a format that can carry transparency, and you really are seeing a checkerboard in what should be the white parts, then perhaps your video drivers are somehow faulting...  Do you have OpenGL Drawing enabled (Edit - Preferences - Performance dialog)?  Sometimes video driver updates from the web site of the maker of your video card can cure the oddest things...

     

    -Noel

     
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