Transparent

  1. A hardware device that has no effect on the data that passes through it, or a software program that works so efficiently that the user is unaffected or unaware that it is even working.
  2. When referring to a graphic, transparent refers to an image that is clear and can take the effect of any images behind it. Below is an example of an image with a transparent background; as you can see, each of the images are the same images but can be used with different backgrounds.
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Almost all image editors used today are capable of making an image a transparent image. If you're having trouble making an image transparent make sure it's saved as a GIF format first. If you wish to remove an images transparency you need to flatten the image, often this can easily be accomplished by saving the image as a different format such as JPG or JPEG. Additional help with creating transparent images is found in the document mentioned below.

Also see: GIF 89a, Opaque