cancel
Showing results for 
Search instead for 
Did you mean: 

Firefox 22 won't open PDFs

Highlighted
New Contributor

Firefox 22 won't open PDFs

Ever since updating Firefox/Mac to v.22, the built-in Firefox PDF viewer won't open PDFs. Any PDF link automatically downloads the file.

I've set the Applications control for PDFs to "Preview in Firefox". I've also reset the mimeTypes.rdf file, but none of this has helped. The files download to my HD. Firefox won't open PDFs on its own. I've had to resort to installing the Shubert plugin to get PDFs to display. It works, but I'd rather get Firefox's native reader to work.

Is there, perhaps, a setting under about:config that might need changed? I don't have to enable Java, do I?

Firefox 22/Mac OSX 10.6.8

Thanks.

17 REPLIES
Grand Master Contributor

Re: Firefox 22 won't open PDFs

New Contributor

Re: Firefox 22 won't open PDFs

I disabled the Adobe plugin years ago. In any case, my problem isn't that PDFs are blank or can't download. It's that the built-in Firefox viewer isn't working.

Thanks, though.

Grand Master Contributor

Re: Firefox 22 won't open PDFs

Are you getting a error message, you may have to reset firefox.

New Contributor

Re: Firefox 22 won't open PDFs

No. No error messages. Firefox will simply download the PDF file whenever I click on a link, or when I right-click on a link and select "Open in new tab". It's like Firefox doesn't know it's supposed to be able to read PDFs.

Grand Master Contributor

Re: Firefox 22 won't open PDFs

In order to be able to find the correct solution to your problem, we require some more non-personal information from you. Please do the following:

  • Click the Firefox button at the top left, then click the Help menu and select Troubleshooting Information from the submenu. If you don't have a Firefox button, click the Help menu at the top and select Troubleshooting Information from the menu.

Now, a new tab containing your troubleshooting information should open.

  • At the top of the page, you should see a button that says "Copy text to clipboard". Click it.
  • Now, go back to your forum post and click inside the reply box. Press Ctrl+V to paste all the information you copied into the forum post.

If you need further information about the Troubleshooting information page, please read the article Use the Troubleshooting Information page to help fix Firefox issues.

Thanks in advance for your help!

New Contributor

Re: Firefox 22 won't open PDFs

As requested:

 Application Basics
       Name
       Firefox
       Version
       22.0
       User Agent
       Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:22.0) Gecko/20100101 Firefox/22.0
       Build Configuration
         about:buildconfig
 Extensions
       Name
       Version
       Enabled
       ID
       Adblock Plus
       2.2.1
       true
       {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
       Adblock Plus Pop-up Addon
       0.5
       true
       adblockpopups@jessehakanen.net
       Google Analytics Opt-out Browser Add-on
       0.9.6
       true
       {6d96bb5e-1175-4ebf-8ab5-5f56f1c79f65}
       Old Default Image Style
       2.2
       true
       olddefaultimagestyle@dagger2-addons.mozilla.org
       Status-4-Evar
       2012.07.08.17
       true
       status4evar@caligonstudios.com
       Stylish
       1.3.1
       true
       {46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
       Adobe Acrobat - Create PDF
       1.1
       false
       web2pdfextension@web2pdf.adobedotcom
       Greasemonkey
       1.5
       false
       {e4a8a97b-f2ed-450b-b12d-ee082ba24781}
       NoScript
       2.6.4.2
       false
       {73a6fe31-595d-460b-a920-fcc0f8843232}
       PDF Viewer
       0.7.1
       false
       uriloader@pdf.js
       PrivacyChoice TrackerBlock
       2.2
       false
       trackerblock@privacychoice.org
       TACO with Abine
       4.50
       false
       optout@dubfire.net
 Important Modified Preferences
     Name
     Value
       accessibility.typeaheadfind.flashBar
       0
       browser.cache.disk.capacity
       25600
       browser.cache.disk.smart_size.first_run
       false
       browser.history_expire_days.mirror
       180
       browser.places.smartBookmarksVersion
       4
       browser.search.update
       false
       browser.search.useDBForOrder
       true
       browser.startup.homepage
       http://www.metafilter.com/
       browser.startup.homepage_override.buildID
       20130618035212
       browser.startup.homepage_override.mstone
       22.0
       browser.tabs.loadInBackground
       false
       browser.tabs.onTop
       false
       browser.tabs.warnOnClose
       false
       browser.tabs.warnOnOpen
       false
       browser.urlbar.autocomplete.enabled
       false
       browser.zoom.full
       false
       dom.disable_window_move_resize
       true
       dom.event.contextmenu.enabled
       false
       dom.mozApps.used
       true
       dom.w3c_touch_events.expose
       false
       extensions.lastAppVersion
       22.0
       font.default.x-western
       sans-serif
       font.internaluseonly.changed
       false
       font.name.monospace.x-western
       Arial Unicode MS
       font.name.sans-serif.x-western
       Arial Unicode MS
       font.name.serif.x-western
       Adobe Caslon Pro
       font.size.variable.x-western
       13
       gfx.blacklist.webgl.msaa
       4
       gfx.color_management.enablev4
       true
       image.mem.decodeondraw
       false
       network.cookie.cookieBehavior
       1
       network.cookie.prefsMigrated
       true
       network.dns.disableIPv6
       true
       places.database.lastMaintenance
       1375198743
       places.history.enabled
       false
       places.history.expiration.transient_current_max_pages
       104858
       places.history.expiration.transient_optimal_database_size
       161061272
       places.last_vacuum
       1296483807
       plugin.disable_full_page_plugin_for_types
       plugin.importedState
       true
       plugin.state.adobeexmandetect
       0
       plugin.state.adobepdfviewernpapi
       0
       plugin.state.amazonmp3downloaderplugin
       0
       plugin.state.iphotophotocast
       0
       plugin.state.java
       0
       plugin.state.officelivebrowserplugin
       0
       plugin.state.pdf browser plugin
       2
       plugin.state.wacomnetscape
       0
       plugin.state.wacomtabletplugin
       0
       print.macosx.pagesetup-2
       PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO
       print.print_bgcolor
       true
       print.print_bgimages
       true
       print.print_command
       print.print_downloadfonts
       false
       print.print_evenpages
       true
       print.print_footerleft
       print.print_footerright
       print.print_headerleft
       print.print_headerright
       print.print_in_color
       true
       print.print_margin_bottom
       0.5
       print.print_margin_left
       0.5
       print.print_margin_right
       0.5
       print.print_margin_top
       0.5
       print.print_oddpages
       true
       print.print_orientation
       0
       print.print_page_delay
       50
       print.print_pagedelay
       500
       print.print_paper_data
       0
       print.print_paper_height
       11.00
       print.print_paper_size_type
       1
       print.print_paper_size_unit
       0
       print.print_paper_width
       8.50
       print.print_printer
       print.print_reversed
       false
       print.print_scaling
       1.00
       print.print_shrink_to_fit
       true
       print.print_to_file
       false
       print.print_unwriteable_margin_bottom
       56
       print.print_unwriteable_margin_left
       25
       print.print_unwriteable_margin_right
       25
       print.print_unwriteable_margin_top
       25
       privacy.clearOnShutdown.cookies
       false
       privacy.clearOnShutdown.sessions
       false
       privacy.cpd.offlineApps
       true
       privacy.cpd.sessions
       false
       privacy.donottrackheader.enabled
       true
       privacy.popups.showBrowserMessage
       false
       privacy.sanitize.migrateFx3Prefs
       true
       privacy.sanitize.sanitizeOnShutdown
       true
       privacy.sanitize.timeSpan
       4
       security.disable_button.openCertManager
       false
       security.warn_viewing_mixed
       false
       storage.vacuum.last.index
       1
       storage.vacuum.last.places.sqlite
       1373201529
 Graphics
       Device ID
       0x 869
       GPU Accelerated Windows
       1/1 OpenGL
       Vendor ID
       0x10de
       WebGL Renderer
       NVIDIA Corporation -- NVIDIA GeForce 9400 OpenGL Engine
       AzureCanvasBackend
       quartz
       AzureContentBackend
       none
       AzureFallbackCanvasBackend
       none
 JavaScript
       Incremental GC
       true
 Accessibility
       Activated
       false
       Prevent Accessibility
       0
 Library Versions
       Expected minimum version
       Version in use
       NSPR
       4.9.6
       4.9.6
       NSS
       3.14.3.0 Basic ECC
       3.14.3.0 Basic ECC
       NSSSMIME
       3.14.3.0 Basic ECC
       3.14.3.0 Basic ECC
       NSSSSL
       3.14.3.0 Basic ECC
       3.14.3.0 Basic ECC
       NSSUTIL
       3.14.3.0
       3.14.3.0
Grand Master Contributor

Re: Firefox 22 won't open PDFs

Legendary Contributor

Re: Firefox 22 won't open PDFs

Occasionally the file that stores your download preferences becomes corrupted. Although in theory it's an editable file, it typically is easier to rename the file and have Firefox regenerate it from scratch. Since Preview in Firefox is the default, hopefully that will restore normal functioning. If it creates new issues, you can reverse the operation (delete the newly generated file and rename the old one back).

Open your current Firefox settings (AKA Firefox profile) folder using

Help > Troubleshooting Information > "Show in Finder" button

Switch back to Firefox and Exit/Quit

Pause while Firefox finishes its cleanup, then rename mimeTypes.rdf to something like mimeTypes.old

Restart Firefox. Any improvement?

New Contributor

Re: Firefox 22 won't open PDFs

jscher2000...If you read my original post, you'll see that I already did that. It didn't change anything.