How to disable the built-in PDF viewer and use another viewer
Third-party PDF viewer plugins are available if you prefer not to use the built-in viewer.
To switch from the built-in PDF viewer to another PDF viewer:
At the top of the Firefox window, click on the button and then select .At the top of the Firefox window, click on the menu and then select .On the menu bar, click on the menu and select .At the top of the Firefox window, click on the menu and select .
Click the menu button and choose . .
- Select the panel.
- Find Portable Document Format (PDF) in the list and click on it to select it.
- Click on the drop-down arrow in the Action column for the above entry and select the PDF viewer you wish to use.
- Note: If you want to view PDF files in Firefox using a plugin, instead of in an external PDF reader application, select Use PDF reader name (in Firefox).
Click to close the Options window.Click to close the Preferences window.Close the Preferences window. Close the about:preferences page. Any changes you've made will automatically be saved.
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