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Firefox downloads ALL PDF's instead of opening

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When trying to view a PDF file in Preview on the Mac Firefox insists on downloading said file each and every time. Settings have been tweaked in application behavior in preferences and I have reset them several times by deleting the mime file in my profile folder.

When trying to view a PDF file in Preview on the Mac Firefox insists on downloading said file each and every time. Settings have been tweaked in application behavior in preferences and I have reset them several times by deleting the mime file in my profile folder.

Additional System Details

Installed Plug-ins

  • 5.1.20513.0
  • Shockwave Flash 10.3 r183
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • Java Plug-In 2 for NPAPI Browsers
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • iPhoto6

Application

  • Firefox 16.0.2
  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:16.0) Gecko/20100101 Firefox/16.0
  • Support URL: http://support.mozilla.org/1/firefox/16.0.2/Darwin/en-US/

Extensions

  • Browse By Name 1.1 (jid0-BJHK9jcBnvyTwamzSSjJvyQXmOE@jetpack)
  • Readability 2.4 ({6005d9b1-d115-485a-a92a-3f6453ca3fe2})
  • Saved Password Editor 2.7 (savedpasswordeditor@daniel.dawson)
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • Tube Enhancer Plus 1.9 (firefoxaddon@youtubeenhancer.com)
  • YesScript 1.9.1 (yesscript@userstyles.org)
  • Ant Video Downloader 2.4.7.11 (anttoolbar@ant.com) (Inactive)
  • DownloadHelper 4.9.21 ({b9db16a4-6edc-47ec-a1f4-b86292ed211d}) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription:
  • adapterDeviceID: 0x 863
  • adapterDrivers:
  • adapterRAM:
  • adapterVendorID: 0x10de
  • driverDate:
  • driverVersion:
  • info: {u'AzureBackend': u'quartz'}
  • numAcceleratedWindows: 0
  • numAcceleratedWindowsMessage: [u'']
  • numTotalWindows: 3
  • webglRendererMessage: [u'blockedOSVersion']
  • windowLayerManagerType: Basic

Modified Preferences

  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 1048576
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size_cached_value: 624640
  • browser.history_expire_days.mirror: 180
  • browser.places.importBookmarksHTML: False
  • browser.places.smartBookmarksVersion: 4
  • browser.search.useDBForOrder: True
  • browser.startup.homepage: http://my.yahoo.com/
  • browser.startup.homepage_override.buildID: 20121024073032
  • browser.startup.homepage_override.mstone: 16.0.2
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 16.0.2
  • general.useragent.extra.anttoolbar: Ant.com Toolbar 1.5
  • keyword.URL: http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=
  • network.cookie.cookieBehavior: 1
  • network.cookie.prefsMigrated: True
  • places.database.lastMaintenance: 1388419935
  • places.history.expiration.transient_current_max_pages: 100664
  • places.last_vacuum: 1305217486
  • plugins.hide_infobar_for_missing_plugin: True
  • plugins.hide_infobar_for_outdated_plugin: True
  • privacy.cpd.offlineApps: True
  • privacy.cpd.sessions: False
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True
  • privacy.sanitize.timeSpan: 0
  • security.disable_button.openCertManager: False
  • security.warn_viewing_mixed: False

Misc

  • User JS: No
  • Accessibility: No
cor-el
  • Top 10 Contributor
  • Moderator
12299 solutions 113913 answers

Did you try to enable the built-in PDF Viewer?

See:


Note that on Mac the Adobe Reader plugin isn't working properly.

Disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.

PDF files may be found under entries like Portable document or Adobe PDF document or Adobe Acrobat Document.

  • Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader
Did you try to enable the built-in PDF Viewer? See: *https://support.mozilla.org/kb/view-pdf-files-firefox-without-downloading-them ----- Note that on Mac the Adobe Reader plugin isn't working properly. * https://support.mozilla.org/kb/pdf-files-are-blank-and-cant-be-downloaded-mac * https://support.mozilla.org/kb/Opening+PDF+files+within+Firefox Disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead. PDF files may be found under entries like Portable document or Adobe PDF document or Adobe Acrobat Document. *Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader

Question owner

The FireFox viewer doesnt function in FireFox V16:-(

The FireFox viewer doesnt function in FireFox V16:-(
Diego Victor
  • Top 25 Contributor
  • Moderator
604 solutions 3852 answers

Hello,

Go to Tools >> Options >> Aplications >>Search for option PDF in front of the name App there is a drop down menu, select "Preview in Firefox"

See more addon related with PDF:

Hello, Go to Tools >> Options >> Aplications >>Search for option PDF in front of the name App there is a drop down menu, select "Preview in Firefox" *[https://support.mozilla.org/en-US/kb/pdf-files-are-blank-or-cause-error-message-mac PDF] See more addon related with PDF: *[https://addons.mozilla.org/en-US/firefox/search/?q=pdf&appver=26.0&platform=windows Addons PDF]
cor-el
  • Top 10 Contributor
  • Moderator
12299 solutions 113913 answers

Sorry, I missed that you are on OS X 10.5.
I don't know what the best solution would be in your case.
I don't think that you can open the PDF files in Firefox, so you will have to download the file and open the file in Preview or another application.

Do you can an open with dialog to specify what to do with the PDF file?

See also http://kb.mozillazine.org/Adobe_Reader

If possible then you can consider to upgrade to OS X 10.6 to be able to use more recent Firefox versions.

Sorry, I missed that you are on OS X 10.5.<br /> I don't know what the best solution would be in your case.<br /> I don't think that you can open the PDF files in Firefox, so you will have to download the file and open the file in Preview or another application. Do you can an open with dialog to specify what to do with the PDF file? See also http://kb.mozillazine.org/Adobe_Reader If possible then you can consider to upgrade to OS X 10.6 to be able to use more recent Firefox versions.