I need to insert the TIFF file into AutoCAD without the white background.  Please tell me how I can accomplish that.

 

Creating transparency is not necessary.

You need to convert your image to Black-and-white.

Tools -> Convert -> To BW (Ordered)

{or other method – Floyd Steinberg, Threshold}

Save this file with G4Fax compression

How to save TIFF file with G4Fax compression

Settings | User settings | Saving | Tiff compression

Use default compression = ON

Black-and-white = G4fax

OK

 

Now use

File -> Save as …

to save your file

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Available program with these features:

• Advanced TIFF Editor Plus (free download, home page);
• Advanced TIFF Editor (free download, home page);