You can open PDFs on a web page either within your web browser, or in Acrobat or Reader. Find instructions specific to each browser below.

Note:

Each browser has its own settings to control how PDFs open from a web page. Acrobat XI and Adobe Reader XI do not include a preference setting to open web-based PDFs. To change the display behavior, follow the instructions below for your browser, or see the browser documentation on how to control plug-ins or add-ons.

Internet Explorer 8 and 9

  1. Open Internet Explorer, and choose Tools > Manage Add-ons.

  2. Under Add-on Types, select Toolbars And Extensions.

  3. In the Show menu, select All Add-ons.

    Select All Add-ons from the Show menu
    Select All Add-ons from the Show menu in the Manage Add-ons dialog box.

  4. In the list of add-ons, select Adobe PDF Reader.

    Note:

    If you do not see the Adobe PDF Reader add-on, try the other options on the menu. For example, on some systems, the add-on appears when you select Run Without Permission.

  5. Click the Enable or Disable button (it toggles depending on the status of the selected add-on):

    Enable sets the Adobe PDF Reader add-on to open PDFs in the browser.

    Disable turns off the add-on so it does not open PDFs in the browser.

    Click the Enable/Disable button
    Select Adobe PDF Reader, and click the Enable/Disable button.

    For more information, see the Internet Explorer help topic Using the Internet Explorer 8 Add-on Manager or How to manage add-ons in Internet Explorer 9.

Mozilla Firefox

  1. Choose Tools > Add-ons.

  2. In the Add-ons Manager window, click the Plugins tab, then select the Acrobat or Reader plugin.

  3. Click the Enable or Disable button (it toggles depending on the status of the selected add-on):

    Enable sets plugin to open PDFs in the browser.

    Disable turns off the plugin so it does not open PDFs in the browser.

    Select the Acrobat or Reader plugin
    Select the Acrobat or Reader plugin in the Add-ons Manager.

    For more information, see the Mozilla Firefox help topic Using a PDF Reader Plug-in.

Google Chrome

Chrome and Acrobat are no longer compatible. Acrobat/Reader plug-in for Google Chrome is based on the Netscape Plug-In API (NPAPI) technology. Google announced that in April 2015 NPAPI plug-in support will be disabled by default in the Google Chrome web browser with an override capability for advanced users.  In September 2015, NPAPI support in the Google Chrome web browser will be removed entirely.

For more information, see Change in support for Acrobat and Reader plug-ins in modern web browsers.

Apple Safari

To view PDFs with Safari, you can do one of the following:

  • Set Safari preferences to use Adobe Reader plug-in
  • Disable AdobePDFViewer plug-in to use the default Safari PDF viewer

Set Safari preferences to use Adobe Reader plug-in to view PDFs

  1. Launch Safari and go to 'Preferences

    Safari preferences
  2. In the 'Preferences' window click on 'Security' and then click on  'Website Settings' button under 'Internet plug-ins'

    Click Security
  3. Now select 'Adobe Reader' in the list of plugins.

    Under the option 'When visiting other Websites', in the drop down list select 'Allow Always' and click on 'Done'

    Select 'Allow Always' and click Done

    Note:

    This will set the browser to use the 'Adobe Reader' plugin to view pdfs

Disable AdobePDFViewer plug-in to use the default Safari PDF viewer

You must have root user privileges to change the Safari plug-ins. To display PDFs using the Safari PDF viewer, you must disable the Adobe PDF Viewer.

  1. Quit Safari.

  2. Log in as the root user. The root user privileges aren't enabled by default because the root user can change system files. For more information and instructions, see one of the following Apple documents: Enabling and using the "root" user in Mac OS X or OS X Mountain Lion: Enable and disable the root user.

  3. Choose Go > Go To Folder.

    Choose Go > Go To Folder
  4. Type /Library in the Go To The Folder field, and click Go.

    the Go To The Folder field
  5. Create a new folder in the Library folder, and name it Internet Plug-ins Disabled.

    new folder in the Library folder
  6. Open the Internet Plug-ins folder, and move both the AdobePDFViewer.plugin and the AdobePDFViewerNPAPI.plugin into the new Internet Plug-ins Disabled folder.

    the Internet Plug-ins folder,

    Note:

    If both AdobePDFViewer plug-ins are still in the Internet Plug-ins folder, drag them now to the trash. You may be asked for your name and password.

    For more information on disabling or removing plug-ins, see Apple Safari help.

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