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HTML5 offers a set of rich animation and interactive content features that work universally across any platform or device type.

HTML5 ads render just like web pages, in contrast to Flash (.SWF), which requires you to have a Flash player (plugin) installed.


Create HTML5 ads

To build HTML5 ads, work with a developer. If that's not an option, IAB lists a few helpful tools, but even these require some technical know-how.

After you create HTML5 ads following these guidelines, reach out to your Account Manager or the Customer Support team to help upload your ads.


Zip file requirements

  • Each ad must be its own zip file containing all code and assets (including public, commonly used JavaScript libraries) that make up the HTML5 ad.
  • All asset links must correctly reference the file locations.
  • Maximum 150 KB zip file, contains no more than 10 files.
  • All assets must be loaded from a secure connection (https).
  • Zip file must contain all files referenced from the HTML doc.
  • No cross-domain scripting: code references to external domains are not allowed.
  • No local storage or session storage libraries allowed.
  • Must be a single, well-structured, and complete HTML document at the root folder
  • HTML tag <!DOCTYPE html>, <html> and <body> tags
  • Declare the clickTag variable
    • Example: <script type='text/javascript'>var clickTag ='';</script>
    • This clickTag variable must be passed as a parameter to any event inside the ad, usually assigned to the JavaScript onclick event of a div element: <div id="clickArea" style="width: 300px; height: 250px" onclick=" ,'_blank');">
  • <meta> tags must be used to identify the size of the ad
    • Example: <meta name=“ad.size” content= “width=300, height=250”>
  • Can load into an iframe

General requirements

Supported File Types  
  • CSS
  • JS
  • XML
  • SVG
  • JPG
  • JPEG
  • GIF
  • PNG
Supported Ad Sizes  
  • 728×90
  • 300×250
  • 160×600
  • 300x600
  • 468×60
  • 120×600
  • 336×280
  • 250×250
  • 320x50
  • 970x250
Supported Shared Libraries & External Files


Browser Support
  • Chrome 40 and above
  • Firefox 35 and above
  • Internet Explorer 10 and above (including Edge)
  • Opera 20 and above
  • Safari 7.0 and above
Supported HTML5 Authoring Tools
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