You can download GIMP, a powerful, free image-editing program, to create a number of different file types not available with default Windows 7 tools. This includes “TGA” files, which are popular for their ability to store transparency.
Step 1:
Go to the GIMP Download page, then click the “Download GIMP 2.6.11” link at the center of the window.

Matthew Burleigh has been writing tech tutorials since 2008. His writing has appeared on dozens of different websites and been read over 50 million times.
After receiving his Bachelor’s and Master’s degrees in Computer Science he spent several years working in IT management for small businesses. However, he now works full time writing content online and creating websites.
His main writing topics include iPhones, Microsoft Office, Google Apps, Android, and Photoshop, but he has also written about many other tech topics as well.