An SWF file is a Shockwave Flash Movie file. Learn how to open an. SWF file or convert an SWF file to video formats like MP4, MOV, AVI, GIF. I have a *. swf file, and I don't have flash player installed on my Chrome has a built in Flash Player called PepperFlash. Go To chrome://plugins/. Well, so how many of you know about SWF files If you don't know, lets have a glimpse of it So, what's a SWF??? SWF is an abbreviation for small web format.