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How to remove the white background from a TIFF image

Question asked by on Jan 13, 2013
Latest reply on Apr 10, 2013 by samorgan
Hi everyone,

I am overlaying a TIFF image onto the World Topographic Map that I downloaded from ESRI ArcGIS Online.

Now, using Photoshop I have already removed the white background in the original TIFF image.  (This was a quick and easy thing to do using the magic-wand tool.)  Thus, the TIFF file contains only black showing a map outline, symbols, and words.

The problem is that when I add this TIFF file to my map in ArcGIS a white background shows up again.  Is there a way to make that white background disappear?

Thank you very much.