Customizing and modifying Firefox

Here I provide solutions to problems I have listed elsewhere, customizations, modifications, and enhancements to Firefox.

1) Firefox only downloads two files at the same time from the same page

Here is a page that describes the fix to Firefox not downloading more than two files from the same site at the same time: Firefox Download Manager 2 files limit

2) Firefox downloader flashes and comes into view when it starts downloading files

3) Duplicate bookmarks

4) Remove that Geegle search area from toolbars, add or remove buttons, resize the toolbars to a small size

Right-click on one of the toolbars, select customize, and add and remove stuff at will by dragging!

5) Have several windows open with Flash items without them playing all at once (Flash games, videos, Geegle Video, YouTube, etc), prevent stupid flash adds from playing endless animations, read long blogs with many flash videos, etc


6) Warning: Unresponsive script. A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

If you have checked the "Don't ask me again" button with either the "Stop script", or "Continue" buttons, and no longer see the dialog, but now want to see the dialog back, then do the following. Open about:config, find entry dom.max_script_run_time, right click and reset. Other helpful links:,,, and test pages: (infinite script) and (long script, not infinite) Unresponsive_JavaScript_example.htm. (Keywords firefox unresponsive script restore check mark not responding don't ask again)

7) Settings that I have to apply to firefox all the time:

  • page print settings (page # and title only on bottom of page)
  • number of http download sessions
  • minimum size of text
  • minimize memory on minimize
  • remove links bar
  • delete contents of links toolbar
  • install extensions
  • blank start page
  • download manager settings
  • number of tabs warning limit

8) Multiple home pages

Entries can be separated with the "|" pipe symbol.

9) Extensions: best reason to switch to Firefox

Here is my add-ons list, but I advise all people to at least once go thru the whole list themselves and you will definitively find something you won't be able to live without.

10) Remove It Permanently extension


11) The amazing Esc button stop GIF animation feature

If there is a flashing ad that is giving you a seizure, just press the Esc button and all GIF animations will stop playing. Amazing!

12) Enable cut, copy, and paste in Firefox

There is a good description of what to do to enable this here. However, enabling this just for your site (fe, your website that you are trying to edit) might not have any effect. Before enabling it for all sites (which should fix the problem), make sure that you include FOUR versions of the URL, both with and without the "www", as in:

user_pref("capability.policy.allowclipboard.sites", "");

It should work now.

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Page last modified 19-Aug-12 19:09:48 EDT
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