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12 More Cool Firefox about:config Tricks

After getting huge hits at 17 cool about:config tweaks and optimizing firefox blog posts, i decided to go for another about:config tricks blog post.

Tested On : Firefox 3.5.2 Ubuntu Jaunty

1- Disabling Favicons in Address Bar and Tabs:

Favicon is a 16x16 pixel square icon associated with a particular website. This setting enables or disables it.

Key : browser.chrome.site_icons
Default Value : True (enable icons)
What i am using : False (disable icons)



2- Show More Tabs on Firefox Window before Scrolling:

This changes tabs minimum width so when you decrease the min width, you will get more tabs on the screen.

Key : browser.tabs.tabMinWidth
Default Value : 100
What i am using : 75

3- Paste with Middle Mouse Click:

This enables / disables pasting copied content with middle mouse click.

Key : middlemouse.paste
Default Value : True (enable)
What i am using : False (disable, without mouse it is faster in my opinion :))

4- Increase Recently Closed Tabs Limit:

By default Firefox 3.5 can only undo last 15 tabs, this setting increases / decreases it.

Key : browser.sessionstore.max_tabs_undo
Default Value : 15
What i am using : 20

5- Speeding Firefox SubMenu Up:

This key modifies or disables the submenu delay of Firefox (I hate submenu delays). You may need to create it (New > Integer).

Key : ui.submenuDelay
Default Value : Not entered
What i am using : 0 (disables the delay and value you gonna enter will be ms not second)

6- Turn Off Chrome Toolbar Tooltips:

This will disable toolbar tooltips of Firefox.(Hover your mouse on a Firefox tab and wait for 3-4 seconds)

Key : browser.chrome.toolbar_tips
Default Value : True (enable tooltips)
What i am using : False (disable tooltips)

7- Enable Spell Check in Text Fields:

By default Firefox's builtin spell check is only available in text areas and text boxes. This tweak enables spell check in text fields also (This is why you see so many grammar mistakes on blog post titles, it does not check that area by default :) ).

Key : layout.spellcheckDefault
Default Value : 1
What i am using : 2

8- Open Bookmark Groups in New Tabs:

If you open a group of bookmarks at once, Firefox's default behavior is to replace any existing tabs with the newly opened pages. With the following key, opening groups of bookmarks will append new tabs to the existing window instead of overwriting existing ones.

Key : browser.tabs.loadFolderAndReplace
Default Value : True (True = Overwrite Existing Ones)
What i am using : False

9- Get Case Sensitive in-page Searches:

Linux is case sensitive as you know and when searching at web pages (Ctrl +F), i really hate Firefox's case insensitive search feature. However with this trick, we can set it as case sensitive:

Key : accessibility.typeaheadfind.casesensitive
Default Value : 0 (case insensitive searches)
What i am using : 1 (cae sensitive searches)

10- Reduce Session History:

Firefox caches several recently visited web pages in memory so they don't have to be regenerated when you press "Back" or "Forward" button. Each page takes arund 4MB of your Ram. You can set the number of pages stored with the following key :

Key : browser.sessionhistory.max_total_viewers
Default Value : -1
What i am using : -1

-1 = determines how many pages to cache from the amount of available physical memory | 0 = disable page caching | NUMBER (For example 8) = maximum number of pages.

11- Disable Blinking Text:

Firefox supports both the HTML element and the blink value for the text-decoration CSS property. Blinking content is very annoying for me and most web users.

Key : browser.blink_allowed
Default Value : True (enable blinking)
What i am using : False (disable blinking)

12- Automatic Image Resizing:

When an image is bigger than your Firefox screen, it is automatically resized to fit the window at Firefox. This is of course very handy for a normal web user but you may need to disable resizing time to time.

Key : browser.enable_automatic_image_resizing
Default Value : True (enable resizing)
What i am using : True (enable resizing)
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