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cannot restore/import Bookmarks from .html/.json file in Firefox 19.0.2


After Resetting Firefox(now have new profile) cannot now restore/import Bookmarks from .html/.json backup files created prior to Reset, in Firefox 19.0.2. CPU usage zooms up to 112% waiting for html or json to be imported. Thank you.

Additional System Details

Installed Plug-ins

  • The Adobe Reader plugin is used to enable viewing of PDF and FDF files from within the browser.
  • Shockwave Flash 11.2 r202
  • The IcedTea-Web Plugin executes Java applets.
  • Xine Plugin version 1.0.2, (c) The Xine Project.Windows Media Player / RealPlayer / QuickTime compatible.
  • Gecko Media Player Player Plug-in for QuickTime, RealPlayer and Windows Media Player streams using MPlayer
  • Version 1.0.6 Goldeneye, copyright 1996-2007 The VideoLAN Teamhttp://www.videolan.org/
  • Helix DNA Plugin: RealPlayer G2 Plug-In Compatible version built with gcc 3.4.6 on Nov 17 2010
  • This plug-in detects the presence of iTunes when opening iTunes Store URLs in a web page with Firefox.
  • will start external gxine media player for embedded media streams
  • The Totem 2.30.2 plugin handles video and audio streams.
  • DivX Web Player version
  • Shockwave Flash 10.1 r999. Gnash 0.8.7, the GNU SWF Player. Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Gnash comes with NO WARRANTY, to the extent permitted by law. You may redistribute copies of Gnash under the terms of the GNU General Public License. For more information about Gnash, see http://www.gnu.org/software/gnash. Compatible Shockwave Flash 10.1 r999.
  • Picasa plugin


  • Firefox 19.0.2
  • User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:19.0) Gecko/20100101 Firefox/19.0
  • Support URL: http://support.mozilla.org/1/firefox/19.0.2/Linux/en-US/


  • Exit Button Firefox 0.4.2 ({94B08592-E5B4-45ff-A0BE-C1D975458688})
  • Flash Video Downloader - Youtube Downloader 3.8.7 (artur.dubovoy@gmail.com)
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • Ubuntu Firefox Modifications 2.6 (ubufox@ubuntu.com)


  • incrementalGCEnabled: True


  • adapterDescription: VIA Technology -- Mesa DRI UniChrome 20060710 x86/MMX/SSE2
  • adapterDeviceID: Mesa DRI UniChrome 20060710 x86/MMX/SSE2
  • adapterDrivers:
  • adapterRAM:
  • adapterVendorID: VIA Technology
  • driverDate:
  • driverVersion: 1.2 Mesa 7.7.1
  • info: {u'AzureContentBackend': u'none', u'AzureCanvasBackend': u'cairo', u'AzureFallbackCanvasBackend': u'none'}
  • numAcceleratedWindows: 0
  • numAcceleratedWindowsMessage: [u'blockedGfxCard']
  • numTotalWindows: 6
  • webglRendererMessage: [u'blockedGfxCard']
  • windowLayerManagerType: Basic

Modified Preferences

  • accessibility.typeaheadfind: True
  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 296960
  • browser.places.smartBookmarksVersion: 4
  • browser.startup.homepage: http://www.google.com/
  • browser.startup.homepage_override.buildID: 20130307164200
  • browser.startup.homepage_override.mstone: 19.0.2
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 19.0.2
  • gfx.blacklist.direct2d: 4
  • gfx.blacklist.layers.direct3d10: 4
  • gfx.blacklist.layers.direct3d10-1: 4
  • gfx.blacklist.layers.direct3d9: 4
  • gfx.blacklist.layers.opengl: 4
  • gfx.blacklist.stagefright: 4
  • gfx.blacklist.webgl.angle: 4
  • gfx.blacklist.webgl.msaa: 4
  • gfx.blacklist.webgl.opengl: 4
  • network.cookie.prefsMigrated: True
  • places.database.lastMaintenance: 1363711856
  • places.history.expiration.transient_current_max_pages: 24591
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • privacy.sanitize.migrateFx3Prefs: True


  • User JS: No
  • Accessibility: No
  • Top 10 Contributor
  • Moderator
10738 solutions 96600 answers

You can check for problems with the places.sqlite database file in the Firefox Profile Folder and delete all places.sqlite files and restore the bookmarks another time.

jdante 0 solutions 1 answers

I have this problem - now I have NO ACCESS to my bookmarks!

  • Top 10 Contributor
2346 solutions 20793 answers

Hi jdante, did you run the Reset?

Could you verify that the bookmarkbackup files got migrated? Here's how:

Help > Troubleshooting Information > "Show Folder" button

In the window that opens, you should find a folder named bookmarkbackups that contains dated files. Are they there?

If those files are missing: In a separate window, open the Old Firefox Data folder on your desktop and check for bookmarkbackups in there. If you find them, copy them to the new bookmarkbackups folder. You can close the desktop folder now.

So now you have backups.

In Firefox, use Exit to close the browser.

I assume you are staring at your bookmarkbackups folder. Review the backups files. Check the dates and sizes. If the most recent one(s) look wrong (e.g., much too small), delete them until the newest file looks like a correct one.

Move back up to the level above the bookmarkbackups folder and rename the places.sqlite file to something like places.old.

When you restart Firefox, it should create a new places.sqlite database and restore the most recent backup it finds.

Any luck?

mossbarry 0 solutions 1 answers

Changing places.sqlite file to places.old is not possible because the message comes up file is open in Firefox Trying to open .json files in any meaningful way is also impossible as the result is a page of jargon with Notepad or MS Word

  • Top 10 Contributor
2346 solutions 20793 answers

Helpful Reply

Hi mossbarry, you do need to exit Firefox and allow a few moments for file updates to be completed before renaming the file.

pbcd 0 solutions 1 answers

Hi, I'm having the same problem importing my json bookmarks.

One level up from bookmarkbackups is file called nrcehfht.default instead of the places.sqlite? Any help would be appreciated.

Thanks, Phil

  • Top 10 Contributor
2346 solutions 20793 answers

Hi pbcd, the nrcehfht.default folder should have numerous files in it. One of those files should be places.sqlite (it's a file, not a folder).

tigmig 0 solutions 2 answers

trying to get your bookmark from a disc or usb key , open the all bookmark thing , click on import tab then the restore and choose file thing , you will find your json file and it will work.

daninkognito 0 solutions 1 answers

Hi! For resolve this issue: on a (top) menu "Bookmarks" chose "Unsorted Bookmarks" (it's a last command), and you will be prompted via "Library" dialog box. From there chose from a (top) menu: "Import bookmarks from HTML page / restore (from a file). That's all.

tigmig 0 solutions 2 answers

that works for the newer back up of bookmarks since they are in HTML but for the old files you must hit the restore button since they were in JSON and not HTML

  • Top 10 Contributor
2346 solutions 20793 answers

Hi tigmig and daninkognito, Firefox's regular backup format is JSON. However, you can manually export to the HTML format from Firefox or from other browsers in order to exchange bookmarks. Given a choice, restore the JSON format because it stores more data, such as tags you have assigned to your bookmarks. But also, be aware that a restore replaces all current bookmarks, so if you need to mix and match, export your current bookmarks to HTML first.