An extension is a piece of software that can be added to an Adobe application to enhance its capabilities. You can add extensions to Dreamweaver®, Flash®, Photoshop®, InDesign®, InCopy®, Illustrator®, Adobe Premiere Pro®, and Prelude®. Bridge® is not supported in CS6 or later.
MXP extensions are no longer supported by Extension Manager CC. To install MXP extensions for Adobe applications, you have to convert them to ZXP extensions first. You can use Extension Manager CS6 to convert MXP extensions to ZXP extensions. Extension Manager CS6 can be downloaded from http://www.adobe.com/exchange/em_download/.
About the Extension Manager
The Extension Manager provides an easy and convenient way to install and delete extensions in Adobe applications, and to find information about extensions you installed. It also provides a convenient way to navigate to the Adobe Exchange site. You can find more extensions, get information about extensions, and rate extensions that you used.
If you haven't already installed Extension Manager CC, click Help > Manage Extensions in your application to download and install Extension Manager automatically.
The Extension Manager only displays extensions that were installed with the Extension Manager application or with Extension Manager commands from the command line. Extensions that are installed using a third-party installer or local changes made to your configuration files do not appear in the Extension Manager.
The Adobe Exchange website at www.adobe.com/go/exchange is a repository for many types of extensions. If you find a non-commercial extension you’re interested in, you can download and install it in an application using the Extension Manager.
You can get more information about an extension, rate an extension you’ve used, or find more extensions on the Adobe Exchange.
When installing extensions, make sure your version of Extension Manager matches the version of the products you are extending. For example, use Extension Manager CC to install extensions in Dreamweaver CC. To manage extensions in earlier versions of the products, use the version of Extension Manager installed with those products.
If the extension installs successfully, a description of the extension appears in the lower portion of the Extension Manager workspace.
Note the following:
For some types of extensions, the changes only take effect after you close and restart the application.
If an extension modifies a configuration file, such as menus.xml, Extension Manager creates a backup of the file (menus.xbk) before installing the extension. In the unlikely event that the extension damages the configuration file, you can restore it with the backup file.
Adobe recommends that you do not modify configuration files by hand. Incorrectly modifying them can cause significant portions of the product to fail and prevent the installation of other extensions. Modify configuration files only by using the Extension Manager.
About signed extensions
A digital signature identifies the publisher of the extension, and contains encrypted information that is unique to the signer and easily verified. The digital signature assures the user that the extension came from the publisher.
Digital signatures are verified with a digital certificate, which electronically establishes the publisher’s credentials. A digital certificate issued by a certificate authority certifies that a publisher and a particular extension are connected. This connection is similar to the way your driver’s license photo connects your identity with your personal details. Extensions signed by Adobe use a certificate issued by VeriSign. Extensions created by non-Adobe developers can use a different trusted certificate to sign their extensions.
For information on how to sign an extension, see www.adobe.com/go/learn_em_signextension_en.