Piranesi

thank you - that did the trick

I've a simple black and white logo that I merely wish to replace a large amount of the white area with nothing aka transparent pixels. As you might have guessed; I'm not experienced using a tool like this. What I tried doing so far is to use the magic selection tool and then cut out all the desired white areas. I put a solid colored layer underneath so I could tell I was getting the desired effect and all looked good. Then I saved the file. This is a .jpg file. After the save the file no longer retains the transparent effect. What am I doing or not doing that I need to do? TIA - Dale