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Flash Guidelines

Flash ads are going out of style! Learn why here. 

Flash ads on Google Chrome

When your Flash ads initially load, it will be greyed out with a play button. Visitors will have to click to play, and then click again to go to your landing page.

If you're using Firefox, Safari, or Internet Explorer it will continue to autoplay as usual. However, if you're viewing this on the latest version of Chrome, it will soon appear frozen until you click on it.

Make sure you keep up with the increasing limitations on Flash functionality as more companies move forward with HTML5 standards. To help you make an informed decision, we’ve laid out some pros and cons in the table below.

You can learn more about HTML5 functionality and advertising best practices by reading through IAB (Interactive Advertising Bureau) guidelines.


HTML5 Flash


  • Works across desktop and mobile devices
  • Video and animation supported without an external plugin
  • It’s the future


  • Displays inconsistently on older browser versions or Internet Explorer
  • Tools for building HTML5 ads are not very developed; you’ll need someone with technical expertise


  • Established technology
  • Many tools and services to build Flash ads
  • Works consistently on older browser versions with the Flash plugin installed


  • Will not auto-play on Chrome
  • Requires Flash plugin to work with Safari & Firefox
  • Not supported on iOS (iPhone & iPad)
  • Minimal functionality on mobile devices



Animation length

Animated ads are restricted to a maximum of 30 seconds (at a 15-20 fps frame rate), after which point they must remain static. These ads must also comply with the other animation policies.


The clickTAG is the parameter in Flash banner ads that define the destination URL. When someone clicks your ad, our system replaces clickTAG with the URL specified in our platform.

In the clickTAG variable, click must be spelled in lowercase and TAG must be spelled in uppercase. clickTAG must show exactly as it appears with no space between click and TAG. Here are some code samples:

ActionScript 2.0

on(release) {
    if (_level0.clickTAG.substr(0,4) == "http") {
        getURL(_level0.clickTAG, "_blank");

ActionScript 3.0

    function(event: MouseEvent) : void { URLRequest( root.loaderInfo.parameters.clickTAG), "_blank");

Replace buttonOrObject with the name of the button that will receive the click.

Note: For AS2 or AS3, it’s not necessary to specify the destination URL for the ad anywhere in this code. This is taken care of through the usage of clickTAG. We recommend uploading the ad into your account and making sure the ad is behaving correctly, allowing time for any necessary changes.

File size, content source, and version info

  • Flash ads must be smaller than 45KB

  • Flash ads must be compatible with Flash versions 4-10

  • Flash ads must be compiled from either ActionScript 2.0 or ActionScript 3.0 sources

  • Content displayed must be contained within the ad file



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