There are both compressed and uncompressed SWF files. The header of the compressed ones starts with "CWS" and uncompressed starts with "FWS".
.swf
To play swf files you will probably need an swf player. There are lots of freeware tools on the web which are rather good and easy in use.
.swf
An .swf ("Shockwave Flash" or "Small Web Format") file is a flash extension file used by the Club Penguin Team when designing rooms,player cards, penguins, games, etc. When you open a .swf room, no penguins appear, because it is just a local .swf file. Club Penguin is made with Adobe Flash. All penguins in .swf's are dark black because it is the default color.
Free SWF Downloader.
No, the SWF file is a Flash player file. Any flash player can play it.
Depending on what kind of application you are creating, any saved Flash file itself has the FLA extension. The final produced output is either a SWF or a Projector EXE.
i have seen one, swf
Maybe you can try this professional SWF converter, which can save all the operatings you do in swf file.
I suggest that you download some special software like swf player or swf reader. I used to view swf files in Firefox.
You cannot.
.html, .php, or .htm