• Do not rely on setting the background color in the movie properties. Please create a bottom layer of the color desired for the background.
• Use the default 15 to maximum 18 frames per second as a guideline.
• Please supply a backup GIF/JPEG.
• Flash ads should not prompt users to upgrade to a newer version of the Flash player. Third-party servers and rich media vendors who serve Flash with an HTML wrapper should not include the parameter "codebase" in the OBJECT tag nor should they include the parameter "pluginspage" in the EMBED tag.
• Click-coding instructions:
  
  Click Tag instructions for Flash

The following tips aid in increasing overall efficiency and thereby reduce both file size and CPU usage of Flash movies:

• Keep within a target range of 15-18 frames per second to curtail CPU usage. 30+ frames per second is considered a high frame rate. See below for more information on CPU usage.
• Reduce or remove animation, masking effects, looping, extraneous frames, and math-based animation (actionscript formulas).
• Preload symbols/images.
• Use symbols for multiple like elements.
• Utilize tweened animations instead of a series of keyframes. Avoid simultaneous animation tweens.
• Limit the amount of information stored within the first few frames of a Flash movie.
• Group objects wherever possible.
• Simplify graphical elements.
• Make use of device fonts and symbol fonts.
• Limit the number of bitmaps.
• For a complete list of optimization guidelines, visit Macromedia's website: http://www.macromedia.com/support/flash/publishexport/stream_optimize/

The following tips aid in increasing overall efficiency and thereby reduce both file size and CPU usage of Flash movies:

Flash players draw on a computer's CPU (Central Processing Unit) to conduct such processes as animation and mathematical computation. Flash movies that contain weighty animation, high frame rates, and burdensome mathematical computations will tax a CPU, thus causing other applications and Flash files to wrestle for a processor's resources. When this scenario occurs, both webpages and applications slow down and may even crash if the Flash movie is demanding enough. Utilize Flash's Bandwidth Profiler to make certain that the Flash movie streams smoothly and doesn't impair system resources. Always test Flash creative across different browsers, platforms, and processors to ensure the best user experience.