Firefox addons become built-in function or built-in remove to create addons ... 以前(或以後)版本不支援功能的替代附加元件。
Add RSS icon back into location bar (URL) in Firefox 4.0. This icon was showed in Firefox 3.5/3.6 by default when page offered feeds.
Favicon Restorer brings the website favicons back into the Location Bar in Firefox 14 and above.
This extension also restores the old "blank document" default favicon on new/blank Tabs and Bookmarks.
Restores the default image style used for top-level images in previous versions of Firefox.
Returns the 'Properties' menu item that was removed in Firefox 3.6 to the context menu.
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
Note from Mozilla: This add-on has been discontinued. Try one of these instead.
Get rid of all toolbars in fullscreen for kiosk applications.
This shows contents of all of tabs as a thumbnail-style list.
Adds 'Full Screen' toolbar button and context menu command.
This is (partially) redundant as Firefox 4 finally comes with its own full screen button to add to the toolbar, which is why I'm discontinuing future support for version 4 onwards.