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Visual Experience Composer helper extension

The Adobe Target Visual Experience Composer (VEC) Helper browser extension for Google Chrome lets you load websites reliably within the VEC to rapidly author and QA web experiences.
Reasons why some websites might not open reliably in the VEC:
  • The website has strict security policies.
  • The website is in an iframe.
  • The at.js library is not yet implemented on the website.
  • The customer's QA and/or stage site is not available to the outside world (the site is internal).
The VEC Helper browser extension for Chrome solves site-loading issues for which customers now rely on the Target Enhanced Experience Composer or third-party extensions, such as Requestly
Benefits of using the VEC Helper extension:
  • All iframe busting headers, such as X-Frame-Options and Content-Security-Policy, are implicitly removed from the website. There is no more need to create complicated Requestly rules to do this.
  • If a webpage does not yet contain the Target at.js JavaScript library, you can use the extension to inject the library so you can author experiences for the website. You can then create activities and QA them using preview links.
  • Mobile Viewports are supported even without the Enhanced Experience Composer (EEC).
  • Customers new to Target can use the extension to experiment with Target even if their IT developers have not yet implemented Target on their websites.
  • Partners servicing multiple customers' websites and Target accounts now have one simple mechanism to support VEC loading, instead of managing multiple rules in third-party tools.

Obtain and install the VEC Helper browser extension

  1. Click Add to Chrome > Add Extension.
  2. To use the extension, click the VEC Helper browser extension icon ( ) in your Chrome browser's toolbar while in the VEC or QA Mode .
The following illustration shows the VEC Helper with the Inject Target Libraries setting enabled:
The following illustration shows the VEC Helper asking you whether you want it to inject Target libraries in the page to enable authoring:


  • Your implementation must use the Target at.js library. You cannot use an mbox.js implementation with the extension.
  • The Inject Target libraries flag in the extension is OFF by default. You can enable this flag if you want to use the VEC on a site that has not yet been implemented for Target.
    Be aware that this flag is a global setting. The flag is enabled or disabled for all websites opened in the VEC. So, for example, if you set this flag to ON and open a website that is already implemented with at.js, you'll receive a message informing you that at.js is already loaded. We anticipate that most customers will already have at.js implemented on their pages and will use the default setting of OFF.
  • The extension loads the latest version of at.js that is available from the Target UI in Setup > Implementation.
  • When using the extension to inject at.js while in QA Mode , you must have another Chrome tab open. This Chrome tab must be authenticated to the same Adobe Experience Cloud Organization in which you created the activity.
  • The following messages help keep you informed:
    • If you attempt to load a website using the VEC that fails to load, a message displays suggesting that you install the VEC Helper browser extension.
    • If at.js is not yet implemented on the website, a message displays in the VEC suggesting that you install the extension.
    • If the extension is enabled and is powering the loading, messages display when the extension injects the at.js library (if necessary) or helps open the website reliably within the VEC.