SWF is a file expansion for Shockwave Flash file format developed by Macromedia but it is owned by Adobe and stands for Small Web Format. This file format contains animated video which is designed to deliver on Web. These SWF files can only be viewed on Web Browser using Flash plug-in. SWF Cartoons are now ruling over web and if you want to watch them on your Mac or windows computer not only in Adobe Flash Player. If you have a collection of interesting flash videos or movies and you want to watch them in your QuickTime.