We can build flash intro in a matter of minutes with technical knowledge whatsoever using only a web browser. Flash Player download is needed for viewing.

You have to suggest your own graphic files up to 20KB and text up to 5 lines.

To have an intro running into a browser you need two files: 1 html page (.html) to be opened by the browser which displays the animation and 1 swf/flash file (.swf) representing the animation itself. Furthermore, they need to have the same name, default being "my_intro".