SWF stands for Small Web Format, a proprietary vector graphics file format produced by Adobe/Macromedia Flash software.

Small enough for publication on the web, SWF files can contain animations or applets with varying degrees of interactivity and function. SWF files can also be used to play files in the FLV (Flash video file) format.

The Flash program produces SWF files as a compressed and uneditable final product. It uses the .fla format as the editable working source files.