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Learn how to get PDF files to open in the Firefox window and fix common problems like blank pages and files downloading instead of opening.

{for fx19} To display PDF files inside the Firefox browser window, you can use the built-in PDF Viewer or a PDF reader plugin. This article covers both methods and how to fix the common issues you might encounter. {/for} {for not fx19} To display PDF files inside the Firefox browser window, you can use the PDF Viewer extension or a PDF reader plugin. This article covers both methods and how to fix the common issues you might encounter. {/for} __TOC__ {for fx19} = Using the built-in PDF Viewer = Firefox now includes a built-in PDF viewer that allows you to view almost all PDF files found on the web without a plugin. The built-in PDF viewer is enabled by default. {/for} {for not fx19} =Using the PDF Viewer extension= {note}'''Note:''' This extension is still in Beta phase. If you are not comfortable with that, you should instead consider using a PDF reader plugin and skip down to [[#w_using-a-pdf-reader-plugin|this section]].{/note} '''[https://addons.mozilla.org/firefox/addon/pdfjs/ PDF Viewer]''' (aka pdf.js) is a new revolutionary extension using web standard technologies that allows you to display within Firefox almost all PDF files found on the web without a plugin. {/for} [[Image:PDF JS]]<br> ==PDF Viewer toolbar functions== *'''View document thumbnails or outline''' - The slider button on the far left will open a sidebar with thumbnails of the documents pages. Some documents will also have an outline view available. These make easy to navigate though a long document.<br><br> *:[[Image:PDF Thumbnails]] *'''Page up and down or skip directly to a page''' - You can use the up and down arrows to page though a document or enter the number of the page you want to go to.<br><br> *:[[Image:PDF Pager]] *'''Change the size of the document''' - Use the + and - buttons to zoom in and out or choose a zoom setting from the dropdown menu.<br><br> *:[[Image:PDF Zoom]] *'''Fullscreen or Presentation mode''' - Click the fullscreen button to allow the PDF file to take over your entire screen. Press {key ESC} to exit fullscreen mode.<br><br> *:[[Image:PDF Fullscreen]] *'''Print''' - Click the Printer button to open the print setup dialog.<br><br> *:[[Image:PDF Print]] *'''Download''' - Click the Download button to save the PDF file to your computer or to open it with a PDF reader program.<br><br> *:[[Image:PDF Download]] *'''Copy current view''' - [[T:contextmenu]] the current view button to open the current view in another tab or window.<br><br> *:[[Image:PDF Copy]] ==Troubleshoot problems with the PDF viewer== === Some PDF files don't render well or are blank === With certain types of PDF files, the PDF Viewer may have problems displaying fonts, colors or the whole document. To view these files: *Click the download button on the right side of the document header in order to open it with the default PDF program on your computer. === Cannot open any PDF files === <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=739058 --> Some extensions that block JavaScript may prevent PDF Viewer from working. You can disable them to allow PDF viewer to work:<!-- Maybe the user is using NoScript and doesn't want to disable it completely.. --> #[[T:Open Add-ons|type=Extensions]] #Select each blocking extension and click {button Disable} close to it. For more information, see [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]. = Using a PDF reader plugin = If you'd rather not use PDF Viewer, you can use a PDF reader plugin like {for win}[[Use the Adobe Reader plugin to view or download PDF files|Adobe Reader]], [http://www.nitroreader.com/ Nitro PDF Reader] or [http://blog.kowalczyk.info/software/sumatrapdf/free-pdf-reader.html Sumatra PDF]{/for}{for linux}[[Use the Adobe Reader plugin to view or download PDF files|Adobe Reader]], [http://mozplugger.mozdev.org/ MozPlugger], or [http://www.unix-ag.uni-kl.de/~fischer/kpartsplugin/ KParts plugin]{/for}{for mac}[http://www.schubert-it.com/pluginpdf/ Schubert<nowiki>|</nowiki>it PDF Browser Plugin] on Mac OS X 10.6 and later{/for}. {for fx19} To change from using the built-in PDF viewer to your PDF reader plugin: # [[T:optionspreferences]] # Select the {menu Applications} 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 '''Use ''PDF reader name'' (in Firefox)'''. {for win}<br><br>[[Image:Opening PDF - Win v2]] {/for} == PDF files show up in the built-in PDF Viewer or are downloaded == {for not fx19} === Check Firefox settings === # [[T:optionspreferences]] # Select the {menu Applications} 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 '''Use ''PDF reader name'' (in Firefox)'''. {for win}<br>[[Image:Opening PDF - Win v2]]{/for} #* If '''Use ''PDF reader name'' (in Firefox)''' is not listed as an Option, see [[#w_reset-download-actions|Reset download actions]] below and then repeat this set of instructions. # [[T:closeOptionsPreferences]] If you still can't view a PDF in Firefox, continue with the following instructions. {/for} ==== Reset download actions ==== # [[T:profileFolder]] # [[T:closeFirefox]] # Delete the {filepath [http://kb.mozillazine.org/MimeTypes.rdf mimetypes.rdf]} file. === Check Application settings === If the PDF reader plugin comes bundled with a reader application, check the application plugin setting if there is some. {for win} * Adobe Reader: *# Open Adobe Reader. *# Once in Adobe Reader, click the {menu Edit} menu in the menu bar, and then click {menu Preferences...} The Preferences window will open. *# In the Categories section, click on '''Internet'''. *# Make sure the first check box, '''Display PDF in browser''', is checked. *# Click {button OK} to dismiss the Preferences window, and then close Adobe Reader. {/for} If you still can't view a PDF in Firefox, continue with the next following instructions. === Re-initialize the plugins database === Follow the instructions in [[Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems#w_re-initializing-the-plugins-database|Re-initializing the plugins database]]. This will force Firefox to rebuild its plugin database. If you still can't view a PDF in Firefox, continue with the next following instructions. === Re-install the application === If the PDF reader plugin comes bundled with a reader application and the above troubleshooting methods for Firefox did not work, uninstall and re-install the application. {for win, linux} * Adobe Reader: *# See [http://kb2.adobe.com/cps/400/kb400769.html Adobe's instructions for uninstalling] (Reader versions 8 and above). You should also uninstall any other versions of Reader that are installed. *# Install the latest version of Adobe Reader from [http://get.adobe.com/reader/ Adobe's download page]. {/for} {for win} If you still can't view a PDF in Firefox, continue with the next following instructions. === Further information for Adobe Reader === If none of the above troubleshooting methods worked, see [http://kb.adobe.com/selfservice/viewContent.do?externalId=328233&sliceId=2 Can't view PDF on the web] from Adobe.com for further instructions. {/for} [[Template:ShareArticle|link=http://mzl.la/MyRa61]]