Use the Adobe Reader plugin to view or download PDF files

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adobe_icon.gif Adobe Reader is a free program for viewing and printing PDF documents.
It includes an Adobe Acrobat browser plugin for displaying PDF documents within Firefox and other Web browsers. (By default, Firefox uses its built-in PDF Viewer.) This article provides resources for setting up Adobe Reader and the browser plugin on your computer.

Support ended for all NPAPI plugins except for Flash in Firefox version 52, released March 7, 2017. See this compatibility document and this article for details.

Beginning with Firefox version 52, support has ended for all NPAPI plugins except for Adobe Flash. See this compatibility document and this article for details.

Installing and updating Adobe Reader

To install Adobe Reader, please visit the Adobe.com website. To make sure your installation of Adobe Reader includes the latest available security and stability updates, open Adobe Reader, click on the Help menu and then click Check for Updates….

See the Adobe Security bulletins and advisories page for information about security and stability issues affecting Adobe Reader.

Viewing PDF files in Firefox

Click the following link to test how PDF files are displayed in Firefox:

By default, Firefox will use its built-in PDF Viewer. To use the Adobe Reader program or browser plugin instead:

  1. Click the menu button New Fx Menu and choose Options.Preferences.
  2. Select the Applications panel.General panel and go to the Applications section.
  3. Select the Portable Document Format (PDF) entry and change the action to use the Adobe Reader program or the Adobe Acrobat plugin.

For more information, see these articles:

Note: The Adobe Acrobat NPAPI plugin has been known to cause problems when used in Firefox on Mac OS X. For details, see PDF files are blank or cause an error message on Mac.

Getting help with Adobe Reader

If you need more help with the Adobe Reader program or plugin, visit the Adobe Reader forums and Adobe Reader product support.




Based on information from Adobe Reader (mozillaZine KB)

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