What is a Plug-In?

A "plug-in" is a hardware or software module that adds a specific feature or service to a larger system. For example, there are a number of plug-ins for the Netscape Navigator browser that enable it to display different types of audio or video messages.

We suggest that you configure your Adobe Acrobat Reader as a plug-in application for your Internet browser.

How to Install the Acrobat Plug-In

Automatic Installation

If you have an Internet browser installed on your system at the time that you install Adobe Acrobat, it should automatically install itself as a helper application in the browser.

You will know that Adobe Acrobat is properly installed as a helper application if you can view the PDF file in the browser window, with a single row of special Acrobat buttons along the top of the viewing screen.

Manual Installation

If Acrobat does not install itself automatically as a helper application for your Web browser, you can also do this manually by copying the appropriate file to your browser's Plug-in folder.

Microsoft Windows

To manually install the Web browser plug-in:

  1. Open File Manager or Windows Explorer.
  2. Locate the Acrobat\Reader\Browser folder.
  3. Copy the NPPDF32.dll or NPPDF16.dll file to your Web browser's Plug-In folder.
Apple Macintosh

To install the Web browser plug-in, open the Web Browser Plug-in folder within the Adobe Acrobat folder.