• About
  

  Open the about window. Useful for checking exactly what version you have installed.

• about:about
  

  Lists all the "about" pages so that they can be opened.

• about:cache
  

  Open about:cache to view cached documents or images.

• about:cache Disk
  

  Open about:cache Disk to view cached documents or images saved to your hard drive.

• about:cache Memory
  

  Open about:cache Memory to view cached documents or images in Memory.

• about:config
  

  Open about:config to change hidden settings that cannot be edited from the Options window.

  All Mozilla based programs have settings that can not be changed in the options window. These hidden settings are all reveled in the about:config where anything can be changed or reset.

• about:permissions *
  

  Open about:permissions to check and manage what are the security settings for the websites you use.

• about:plugins
  

  Open about:plugins to view installed plug-ins.

• Add-on Preferences *
  

  Displays a submenu that allows you to open the option window for any add-on that has one.

• Add-ons
  

  Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.

  The Add-on's window allows the installation and management of all your extensions and themes. If you need an update, change a setting, swap themes or enable/disable an add-on the Add-ons' window is the place to go. Being able to access this quickly is a necessity for anyone that uses even a handful of add-ons.

  The button also contains a drop down menu that allows you to install add-ons, open the add-ons window to the extension or themes tab, or set which websites can install addons.

• Add-ons Allowed Sites *
  

  Open Dialog for Add-ons Allowed Installation Sites

• Animation
  

  Stop annoying animated GIF's, and some blinking or scrolling text.

• Back *
  

  Go Back. A replacement for the default Back button that can be put anywhere.

• Bookmark All
  

  Bookmark all the currently open tabs. The new bookmarks will be placed in a new folder of your choice.

• Bookmark Manager
  

  Open the bookmark manager to edit, deleted or tidy up your bookmarks.

  Anyone who bookmarks lots of page will soon find they need to sort them into some kind of order. The bookmark manager button allows quick access to the bookmark manager window where bookmarks can be moved, edited or deleted.

• Bookmark Menu
  

  The Bookmark Menu made with an icon, uses less toolbar space and looks much nicer.

• Bookmark Menu
  

  The Bookmark Menu made with an icon, uses less toolbar space and looks much nicer.

• Bookmark Page
  

  Bookmark the current page. This should really be one of the default buttons in Firefox since it must be clicked a million times.

  Bookmarks are the heart of the web browser, remembering where the great page your saw the other day can be quite hard, so you bookmark it. Having a convenient button to quicken the process just makes so much sense.

• Bookmark Sidebar *
  

  Toggles the display of the Bookmarks sidebar.

• Bookmark Toolbar
  

  Show/Hide to Bookmark Toolbar.

• Bookmark Toolbar Menu
  

  Show the contents of the Bookmarks Toolbar in a drop down menu.

  This compresses the bookmark menu into one button that you can put on any toolbar you want to.

• Bottom
  

  Go to the very bottom of the current page.

• Browser Console *
  

  Open the Browser Console to view error messages.

• Change Case *
  

  Change the case of the currently selected text.

• Change Dictionary
  

  Change the currently in use Dictionary to a different one with a simple drop down menu.

• Change Home *
  

  Change Your Home Page

• Change Text Direction
  

  Change the text direction from left to right or right to left.

• Clear Cache
  

  Clears the browser cache and other selected storage.

• Clear Data
  

  Open the clear private data window.

• Clear Search
  

  Clear and focus on the search bar.

• Clear Tab
  

  Open about:blank, which effectively just clears the contents of the current tab.

• Clear Url
  

  Clear and focus on the urlbar.

• Clipboard Link
  

  Open a link you have copied to the clip board.

• Close All
  

  Close all the the currently open tabs.

• Close Other Tabs
  

  Close all the currently open tabs except the selected one.

• Close Tab
  

  Close the currently open tab, or is there are not tabs open the window.

• Codefisher *
  

  Opens various pages of the Codefisher.org website.

• Color Picker *
  

  Opens a color picker dialog window, to chose and work with colors.

• Cookie Exceptions *
  

  Open the cookie exceptions dialog.

• Cookie Manager
  

  Opens the cookie manager for the current web page. On middle click opens in a new tab.

• Copy *
  

  Copy selected text.

• Copy Tab
  

  Makes a copy of teh current tab

• Create Profile *
  

  Create a new profile.

• Current Frame
  

  Show only the currently selected frame.

• Customize Toolbar
  

  Open the customize toolbar window to add or remove items from your toolbar.

  The customize Toolbar window is where every button from this extension and others like it get placed for you to then move to your toolbar. Creating the perfect set up is always a moving target that is never quite achieved, but this will make it a little quicker to get there.

• Cut *
  

  Cut selected text.

• Data URI Generator *
  

  Converts Files to their base64 equivalent

• Debugger *
  

  Open the Web Tools at the Debugger tab.

• Decrease Searchbar Size
  

  Decreases the width of the searchbar by 10 pixles

• Delete
  

  Delete the currently selected item(s) or text.

• Delete Cookies *
  

  Deletes all browser cookies.

• Delete Session Cookies *
  

  Deletes all the cookies from the current session.

• Developer Toolbar *
  

  Toggles the Developer Toolbar

• DOM Inspector
  

  Open the DOM (Document Object Model) Inspector to view and manipulate the DOM tree.

• Download Folder *
  

  Open the default download folder.

• eBay
  

  Go to the eBay web site.

• Edit Menu
  

  Show the edit menu.

• Email Link
  

  Send Page Link in an Email.

• Error Console
  

  Open the error console to view errors caused by scripts.

  The error console is every developers best friend. Trying to find the line where you went wrong can be very hard with out so clue particularly in long or complex scripts. It shows errors from JavaScript, CSS, XML and even from the program itself should that be enabled.

  If the error console is disabled, this button will, depending on its setting, open the "Web Console" or "Browser Console" which now serve the same function.

• Exit
  

  This button not only closes the current window, but every one that the current application may have open. It is a lot quicker than finding all windows and closing them one at a time.

  Finished browsing or reading all your emails, left lots of windows open? Don't want to have to shut them all one at a time? This little button can close them all, with out you having to do it all.

• Extensions
  

  Open the Extensions Manager to install, uninstall or do any other needed tasks to any of your extensions.

• Eyedropper *
  

  Enable the Eyedropper. The colour of the point selected with be copied the the clip board

• Favourite Page
  

  Open a page of your choice from a toolbar button. You can set the link from the options window

• File Menu
  

  Show the file menu.

• Find
  

  Open the find bar to find a word in the current page.

• Find Again
  

  Find the next bit of text that matches your search.

• Find Previous
  

  Find the previous bit of text that matches your search.

• Flash
  

  Stop Flash from annoying you.

• Forward *
  

  Go Forward. A replacement for the default Forward button.

• Free Memory *
  

  Free unused memory that Firefox is currently using.

• Full Screen
  

  Toggle the window to full screen mode, so you can view as much of the current page as possible.

• Get Extensions
  

  Open addons.mozilla.org on the page to get more Thunderbird extensions. Link can be change using about:config if you prefer another site.

• Get Extensions
  

  Open addons.mozilla.org on the page to download more Firefox extensions, link can be changed in about:config if your prefer to use another site.

• Get Themes
  

  Open the Themes Manager to change your theme or install a new one. Only works in Firefox 1.5. Firefox 2 users should use the Add-ons Button.

• Get Themes
  

  Visit the addons.mozilla.org page for downloading more Firefox themes. Link can be changes using about:config if you prefer to use another site.

• Gmail
  

  Open Gmail to read your new message. Link can be set in about:config.

  Gmail, Google's massively popular web based email. Checking if you have a new email becomes an often repeated task. This button serves as a second "home page" button, bring you to your email quicker and will less hassle.

• Go
  

  Go to the current url in the address bar

• Go First/Last Tab *
  

  Goes to the first tab, or if the first tab is sellected, the last tab.

• Google
  

  Open the Google home page. The link can be changed using about:config.

• Help
  

  Open the application help documentation.

• Help *
  

  Show the Help Menu

• Hide Images
  

  Hide all image in the currently open web page.

• Hide Toolbars *
  

  Toggle the visibility of all toolbar, other then the main toolbar.

• Hide Url
  

  Hide the text of the url bar, so the link is no longer visiable.

• History
  

  Show the history menu.

• History Sidebar *
  

  Toggles the display of the History sidebar.

• Hotmail
  

  Open the Hotmail home page to view you mail.

• iframes
  

  Stop iframes from loading and the ads they often contain

• Import
  

  Import settings and data from another application.

• Increase Searchbar Size
  

  Increases the width of the searchbar by 10 pixles

• Inspector *
  

  Open the Web Tools at the Inspector tab.

• Install
  

  Install an extension or theme file you have downloaded and stored on your hard drive. Middle clicking the button will open the window to control which sites can install extensions.

  Installing Extensions and particularly themes that you have downloaded can be quite a trick. This button makes the process simple and hassle free.

• Languages *
  

  Open the Language Manager to enable or disable or do any other needed tasks to any of your language packs.

• Link Setting
  

  Change the setting that controls how other applications or JavaScript open new windows. Buttons icons indicate what setting is in use.

• Menu
  

  Show all the menus in a single menu.

• Minimize
  

  Minimize the current window.

  I hate popups that don't show the minimize button on the window itself. This has been my solution. Also when I use full screen mode, and then want to minimize the window, this again this comes in useful.

• Minimum Font Size
  

  Set a minimum font size that web sites can use. Prevents a web site using a font that is smaller than what you are able to read.

• Move to Window *
  

  Moves the current tab to a new window.

• Movies
  

  Stop movies from loading.

• Network *
  

  Open the Web Tools at the Network Monitor tab.

• New Message
  

  Open Thunderbird's compose window to write a new email.

• New Tab
  

  Create a new empty tab

• New Window *
  

  Open a new browser window.

• Next Tab
  

  Change the currently focused tab to the next one.

• Open
  

  Open a file stored on your local hard drive. Can be used to install extensions or themes.

• Options
  

  Opens the Options window so you can change settings easily.

  Firefox, Thunderbird and Sunbird all have a huge number of settings. Often you will find a need to change one. About to visit your banking site, so you want pop ups enabled, or what ever your current need might be. The button brings the option window to you quicker.

• Page Colours
  

  Toggles between using the default colors (that tend to be easily readable) and the colors set by the web pages author.

• Page Down *
  

  Scroll current tab one page down.

• Page Fonts
  

  Toggle between the use of the fonts used by the site and those that are set as the default.

• Page Info
  

  Open the Page Info window to find out extra information about the current web page.

• Page Media
  

  Show the page info window with the media tab open.

• Page Setup
  

  Define margins, orientation, and set up how the page is printed.

• Page Up *
  

  Scroll current tab one page up.

• Passwords
  

  Opens the password manager to view saved passwords

• Paste *
  

  Paste text.

• PayPal
  

  Go to the PayPal web site.

• Performance *
  

  Open the Web Tools at the Performance tab.

• Pin Tab *
  

  Toggle if the current tab is pinned or not.

• Plugins *
  

  Open the Plugin Manager to enable or disable or do any other needed tasks to any of your plugins.

• PopUp Blocker
  

  Toggle the popup blocker, so it can easily be deactivated as needed. Middle click opens the popup exceptions window.

• Previous Tab
  

  Change the currently focused tab to the one before the one you a viewing now.

• Print
  

  Print the current page.

• Print Preview
  

  Open the Print Preview to view a page before printing it.

  Paper costs money (and trees) so it is worth checking what the page looks like before you print it. Though it has always amazed me just how much the button gets downloaded.

• Profile
  

  View your profile folder to find files (such as you bookmarks) to back them up.

  Finding your profile folder can be a slow and annoying process. So this button does it for you in a flash, no more digging though all your folders.

• Quick Bookmark
  

  Bookmark the current page with out that allowing popup asking where you want it put, The top level bookmark folder is fine thanks!

• Read Mail
  

  Launch your default Email program from within Firefox.

• Read News
  

  Launch your default News program from within Firefox.

• Recently Closed Tabs *
  

  Open a list of the recently closed tabs.

• Redo
  

  Redo the late change.

• Reload
  

  Reload the current page/tab.

• Reload Proxy
  

  Reload the currently in use proxy.

• Reload Skip Cache
  

  Reload page without using content stored in the browser cache to make sure you get any updates.

• Reload Tabs
  

  Reload all open tabs.

• Remove Label
  

  Remove the label and icon from the current tab.

• Remove Labels
  

  Remove the labels from all of the currently open tabs.

• Rename Tab
  

  Rename the Currently Selected Tab.

• Reset Zoom
  

  Reset Text Size to the default setting.

• Resize Search Size
  

  Resizes the width of the searchbar

• Responsive Design *
  

  Opens the Responsive Design View, to show how the web pages might appear on a mobile device.

• Restart
  

  Restart the current application after installing a new extension, theme or plug-in.

  There is a number of reasons you may want to restart the program your using. Though having installed an extension is the most common. This button take all the hassle and work out of it.

• Restart in Safe Mode *
  

  Restarts the application with all the installed add-ons disabled.

• Run Application *
  

  Runs an external application

• Save
  

  Save the currently open document, or image to a file.

  Saving a page or email for later viewing or to send to a friend is a much needed functionality, so much so that there really should be a toolbar button for it.

• Save Frame
  

  Save a frame from the current document.

• Scratchpad *
  

  Open the Scratchpad window for testing JavaScript.

• Search Go
  

  A separate button for doing a web search from the search toolbar.

• Select All
  

  Select all the text in the current text box, web page, etc.

• Send Referrer *
  

  Toggle the send referrer setting between the default, sending it for all links and images, to sending it just for links, to off.

• Services *
  

  Open the Services Manager to enable or disable or do any other needed tasks to any of your services.

• Share *
  

  Share the current page on one of several social media platforms

• Show All History
  

  Open the window showing all your browsing history.

• Show Frame
  

  Show only the currently selected frame.

• Sidebar *
  

  Toggle the open sidebars, such as the history and bookmark sidebars.

• Snap Back
  

  Go back to the very first page that was opened in the current tab.

• Source
  

  View the page or message source code.

• Status Bar
  

  Toggle the status bar from hidden to shown. Hide it to get the most out of your screen space, and show it when it really needed.

• Stop
  

  Stops the current page from continuing to load.

• Stop All
  

  Stop all tabs from loading when you have mass opened tabs and found the one you really wanted.

• Style Editor *
  

  Open the Web Tools at the Style Editor tab.

• Switch Profile... *
  

  Switch the Profile that you are currently using.

• Tab List
  

  When you have lots of tabs open, it is good to have another way of selecting one.

• Themes
  

  Open the themes manager to change you theme or install a new one.

• Toggle Cookies
  

  Changes the cookie setting between: allow, 3rd party disabled, all disabled. On middle click opens the cookie exception window, and the drop down menu had other options.

  Some sites use cookies in a way that we as internet users don't tend to approve of. This button allows you to turn cookies off quickly before you visit such sites.

• Toggle embedded
  

  Stop movies, Flash, Java or any other plug-ins from loading their content.

• Toggle Images
  

  Enable or disabled if images load or not. This option can also be changed in the options window. The states are: load all images, do not load images, and do not load 3rd party images. If you middle click the button it will open the window for specifying what websites can load images.

• Toggle Java
  

  Toggle Java between enabled and disabled.

• Toggle JavaScript
  

  Enable or disable JavaScript. Means you keep keep it disabled most of the time and only turn it back on when you really need it.

• Toggle menu bar
  

  Toggle the menu bar. Don't put this button on the menu bar!

• Toggle Pipelining *
  

  Toggle the Pipeline setting.

• Toggle Proxy
  

  Toggles the Proxy between on and off for quick changing of networks.

• Toggle Styles
  

  Toggle pages styles between showing the site's default and the browser defaults.

• Toggle Toolbar
  

  Toggle the main toolbar from showing to hidden. Don't place it on the main toolbar, it is disabled then and will not work.

• Toggle Tools *
  

  Show or Hide the Web Tools panel

• Toolbar Display *
  

  Set the toolbar icon size as either large or small, and the button display mode between icons, icons and text, or text only.

• Toolbars
  

  Show and hide toolbars quickly and easily.

  Toolbars use up valuable screen real estate, removing them frees this up to show more web page or email depending on what your doing.

• Tools Menu
  

  Show the tools menu.

• Top
  

  Scroll the page to the very top.

• Translate
  

  Translate current page to your preferred language using the Google Translation service.

• Twitter
  

  Open the Twitter website. The link can be changed using about:config.

• Undo
  

  Undo last change/action.

• Undo Close Tab
  

  Reopen the last closed tab. Really nice when a tab is closed by mistake, or you decided you did not really want to close it moments too late.

• Up Directory
  

  Go up one directory. This effectively removes ever non forward slash character after the last one.

• Update
  

  Check for updates to the currently open application.

• User Agent *
  

  Allows the browser's user agent string to be changed to any of a number of predefined, or user set strings.

• View Menu
  

  Show the view menu.

• Web Console *
  

  Open the Web Tools at the Web Console tab.

• Web Developer *
  

  Opens the Web Developer Menu to access tools like the Web Console and Developer Toolbar

• Web Search
  

  Search the web with your default Search Engine. Only useful if you don't have the search bar visible.

• WebIDE *
  

  Open the WebIDE to manage your apps.

• Wikipedia
  

  Open Wikipedia home page to find and edit articles. about:config can be used to edit what page this opens at.

• Work Offline
  

  Toggle Work Offline and Work Online.

• Yahoo Mail
  

  Open the Yahoo Mail page to check your email.

  Yahoo Mail, the massively popular web based email from Yahoo. Checking if you have a new email becomes an often repeated task. This button serves as a second "home page" button, bring you to your email quicker and will less hassle.

• Zoom In
  

  Enlarge the text size on sites that makes the text so small you can't read it.

• Zoom Out
  

  Reduce the text size so it is not so big.

• Zoom Text Only *
  

  Toggle between text and page zoom.

* These buttons are not in the official release, but will be added if they are popular here.