How to Fade an Image for an Advertisement Using GIMP

Create the Layer Mask

1. 
   Right click on your image in the toolbox and select "Add new layer". When the dialog box appears, select White (Full opacity). You will be making a layer mask.
2. 
   Press the D key. This will reset your foreground and background colors to black and white.
3. 
   Click on the Blend icon to open the Blend dialog box at the bottom of the tool bar. Be sure the options are what you see in the screenshot.
4. 
   Hold down the CTRL key and (for this image), start the process by clicking on the very left of the image. Move left to the point where you want your fade to start.

   1. The first point is where the image will be 100% transparent. The end point is where the fade begins (as mentioned before).
5. 
   If you don't like the look of the layer mask fade, press CTRL + Z to undo.
6. 
   Keep doing this until you are happy with the fade. Here is the final image.