With the Swiffy Extension, you can publish to right from Professional. This makes using Flash to develop HTML5 much easier. The extension accesses Swiffy as a web service, so you always use the most recent version of Swiffy.

Easy to install
Download the Swiffy Extension (.mxp file) and open it. Adobe Extension Manager will install the Swiffy Extension, making it immediately available to use from Flash Professional.

Find out more here