The other day I needed to change a background of a .gif image from white to transparent. Since I didn’t have any image creation software that would do the job installed on my computer, I had to be creative… Recalling from my C++ days the SetTransparentColor API, I was about to create a C# application and change the transparency color programmatically… Luckily, before I acted on that thought, it occurred to me to that Picture Tools in Microsoft Office products allow you to format an image, including ability to re-color it.
So, here are the steps required to set a transparent color of a .gif image using MS Office 2007:
- Open PowerPoint (or other Office applications like Word)
- Copy and paste your image into the document (e.g. into a PowerPoint slide)
- Click on the image to select it – this will set the tool context to Picture Tools
- Click Format menu option
- On the left side of the ribbon, click on Recolor option and then select Set Transparent Color.
- Now, click anywhere on the image background (indicating the color that should now be transparent)
- The final step is to right mouse click on the image and choose Save As Picture option to save the modified image.