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Adobe Extension Builder 3

Develop HTML Panels for Adobe Creative Cloud Applications

Adobe Extension Builder 3 preview 3 is an Eclipse-based tool that helps web developers create extensions for Adobe Creative Cloud Applications using modern HTML5.

Note: Adobe Extension Builder 3 preview 3 is not compatible with Adobe Creative Cloud 2014 applications. However, you can tweak it so that it works. Learn More ›

Extension Builder 3 is ideally suited for developers familiar with HTML, JavaScript and CSS with at least basic knowledge about Adobe Product Extensibility. Extension Builder 3 Preview is free to download.

Extension Builder 3 supports building extensions for Adobe Photoshop CC, Adobe Premiere Pro CC, Adobe Prelude CC, Adobe Illustrator CC, Adobe InDesign CC and Adobe Flash Pro CC. More Adobe Creative Cloud applications will be supported later in 2013. Features include:

  • UI Enhancements — In this release, extension panels that you build for Photoshop, Prelude, and Premiere Pro are designed to more closely match the UI of the host application.
  • New Project Wizard — The New Project Wizard can guide you to generate a new HTML extension project. The new project generated can be executed in target Adobe products directly. The new project wizard also provides several templates for the new project, such as minimum project, a project integrated with Adobe IPC library, etc.
  • In-app Debugging — Extension Builder 3 enables a debugging tool that is embedded in Adobe products, allowing you to step through your extension's code while it runs in the target application.
  • Export with JavaScript Obfuscation — Extension Builder includes tools to help you package your finished extension in the ZXP format, so that you can offer it in Adobe Exchange, and users can install and manage it with Extension Manager. During export, you can choose the JavaScript Obfuscation option, causing the JavaScript code in your extension to be processed by the Google JavaScript Obfuscator.
  • Bundle Manifest Editor — Extension Builder includes a graphical interface that allows you to examine and change the settings of your extensions without having to directly edit the manifest.
  • HTML Extension Samples — In addition to templates, this preview includes samples that illustrate the new HTML functionality. You can install and execute these samples in Photoshop CC and Premiere Pro CC.

See Adobe Extension Builder 3 Release Notes for more information about these features.

Getting Started

Follow these steps to get started with Extension Builder 3:

  1. Download and install Eclipse 3.6 or later
  2. Download Extension Builder 3 Preview 3
  3. Launch Eclipse and go to Help > Install New Software.
  4. In the Add Site dialog, click Archive and browse to the Adobe Extension Builder 3 Preview zip file downloaded from Adobe web site.
  5. Click OK to confirm the changes.
  6. Select all the Adobe Extension Builder 3 components by selecting the top item under Name. Select Next to confirm the selection.
  7. In the Install Details review dialog, click Next to confirm that you want to install all the components listed.
  8. Accept the terms of license agreements and click Finish.
  9. Re-start Eclipse as recommended.
  10. Follow the operation instructions in the Extension Builder 3 release notes
  11. Ask questions or share your feedback in the Extension Builder 3 forum

    Please note that your submission of comments, ideas, feature requests and techniques on this and other Adobe maintained forums, as well as Adobe's right to use such materials, is governed by the Terms of Use.


Below you'll find references and links to help you participate in the Extension Builder 3 community.

Online Forum

Ask questions and discuss ideas with other users of Extension Builder 3 in the discussion forums. We would like your thoughts on the extension, especially regarding additional features and any bugs.

Visit the Extension Builder 3 discussion forum

Please note that your submission of comments, ideas, feature requests and techniques on this and other Adobe maintained forums, as well as Adobe's right to use such materials, is governed by the Terms of Use.


If you want to learn more about releases on Labs as well as other Adobe technologies, visiting a user group or connecting with an Adobe Community Professional is a great place to start.

Product Details


Frequently Asked Questions

What is Extension Builder 3 Preview?
Extension Builder 3 Preview is an Eclipse plugin that provides the capability to develop HTML5 extensions for Creative Cloud Applications.
How is Extension Builder 3 different from Adobe Extension Builder 2.1?
Adobe Extension Builder 2.1 enables developers to create extensions using Flash technology Extension Builder 3 does not support developing Flash based extensions. While Extension Builder 2.1 is based on Eclipse and Flash Builder, Extension Builder 3 Preview does not make use of Flash Builder.
What Adobe Products support HTML Extensions?
Adobe Photoshop CC, Premiere Pro CC, Prelude CC, Illustrator CC, InDesign CC and Flash Professional CC support modern HTML extensions as of July 31, 2013.
Will CS6 products support HTML extensions?
At this time there are no plans to add HTML extensibility to CS6 products.
Now that I have created my HTML extension, how can I distribute it and sell it?
You can share your extensions both publicly and privately through Adobe Exchange.

System Requirements

The minimum system requirements for Extension Builder 3 are as follows:

  • Memory (RAM) - 2GB
  • Available disk space - 2GB
  • Eclipse version 3.6 or later
  • OS
    • Windows XP SP2 and later
    • Mac 10.6 and later

See Photoshop CC system requirements

Release Notes

This release of the Extension Builder 3 is designed for evaluation purposes only. The software contained is not final; however, many portions of the technology are fully implemented and ready for you to try and discuss.

Read the Adobe Extension Builder 3 release notes

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