What Application Do I Use to Open a PNG File
Since .png is a type of graphics file, it can be opened in many applications. The easiest app to find is probably MSPaint, which is resident with Microsoft OSs. Later OSs (XP, Vista, 7, etc.) will allow you to just click on the .png to open it.
You need to use a software program that opens the file. There are many software programs available for use. Check the following site to get a software. http://www.openwith.org/file-extensions/png/953