MultiZilla Features

The MultiZilla project has an impressive track record — we introduced a large number of features (long) before they were implemented in Mozilla Firefox.

  • MultiZilla introduced tab re-ordering (drag and drop) five years before it was implemented in Mozilla Firefox. Now, if that doesn't mean anything to you… then we don't know what will.


Some of our the MultiZilla features will never be implemented in Mozilla Firefox, or so it seems, but some are copied by other add-on developers.


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MultiZilla Features
Tabs in MultiZilla show the Favicon or Site Icon of the visited site, if available and not blocked.
Close Button
Tabs in MultiZilla show a Close Button on the tab when you hover your mouse pointer over it, on the exact same spot as the Favicon or Site Icon (this to preserve essential space).
Tab Label
Tabs in MultiZilla either show the Title or the Location of the visited page. Note that the location will also be used, as fallback, in case a title isn't available.
Automatic Tab Selection
Tabs in MultiZilla can be selected automatically by hovering your mouse pointer over a tab. The checkbox to enable it can be found on MultiZilla's Tab Miscellaneous Behavior preference panel.
Tab Preferences
All default preferences can be changed in MultiZilla's Tabs preference panel.
Context Menu
A right click on a Tab will open a Context Menu which contains various tab-related features.
Tab Bar
The Tab Bar in MultiZilla can be displayed at the top or bottom of the browser window. You can use the third button (bottom image / top image) on the toolbarto toggle the location of the Tab Bar.
Context Menu: a right click on the Tab Bar will open this Context Menu.
Tab Menu
In addition to the usual tab specific features such as opening and closing tabs, MultiZilla's Tab Context menu provides more advanced menu items like: Duplicate, Move, Import and Export Tabs, Automatic page reloads, History, Tab Sessions and Re-opening of previously closed Tabs.
The MultiZilla toolbar contains 15 buttons, which can also be used by the GoogleBox. You can easily hide the complete toolbar by pressing F12 or using menu (View -> Show/Hide). In addition, The toolbar can be displayed in Full Screen mode, wich you can switched on/off with F11. You can easily hide one or more buttons on MultiZilla's Buttons Preference panel.
Quick Prefs Menu

The Quick Preferences Menu (QPM), provides quick access to a number of preferences that you otherwise change with the preference manager. There are 68 QPM items when the MultiZilla Toolbar is displayed and 84 when it is hidden. You can enable the QPM button on one or all of the following toolbars: Navigation Toolbar, Personal Toolbar and the MultiZilla Toolbar.

Feed Viewer
Image of MultiZilla's Feed Viewer
MultiZilla adds a Feed Viewer to display web feeds in nice looking tabs. It enables you to subscribe to your favorite web feeds by simply click on the Image of MultiZilla's 'Subscribe To Feed' button button on the status bar, which only appears on enabled web sites, and use the 'Subscribe to feed' button.
Feed Reader
Image of MultiZilla's Feed Reader

MultiZilla adds a Feed Reader, which is a simple two pane sidebar panel The upper pane (tree) lists the feed names and the lower pane lists the articles of the selected feed. Hover your mouse over the articles to show info popups (tooltip) with all, or a part of the text (pref driven) of the articles.

The Feed Reader supports all commonly used RSS and ATOM protocols, has a basic pref panel called 'Web Feeds' and checks for updates after a given (pref driven) time.

Note: MultiZilla adds a 'View' button which enables you to hide the sidebar headers. This features preserves vertical screen space, because you need all of it.

Image of MultiZilla's Session Manager

MultiZilla adds five managers and they all share the same nice look and feel. They give you full control over: Tabs, Tab Sessions, Permissions (content blocking) Preferences and the used User Agent.

Note: a full description of each manager is beyond the scope of this page so we kindly ask you to visit the managers page where you find additional information.

Content Blocking
Image of MultiZilla's Content Blocker

MultiZilla was the first to include a real content blocker (AdBlock was really AdHide for a long time) and it enables you to block all sorts of content, (the image and frame blocker windows is shown above). This window enables you to remove/set permissions and to remove/change/add a filter with ease. Note that a preferred filter will be filled in automatically and the buttons are also automatically enabled, making it as easy as possible for you.

All other content, including Cookies and Popups, can be blocked with help of MultiZilla's Permission Manager, which effectively supersedes the default Cookie, Image and Popup and managers.

Preference Panels
Image of MultiZilla's Preference Manager

MultiZilla adds flexibility and gives you full control over your browser by adding eighteen additional pref panels. We've always been in favour of making the browser as configurable and flexible as possible, so you will find several additional preference panels.

Please note that the Tab Manager, Tab Session Manager, User Agent Manager and the Permission Manager also include settings panels, which are opened by the 'Settings' button (ALT+S).

Software Installation
Image of MultiZilla's Context Menu

MultiZilla adds an enhanced version of Mozilla's Software Installation confirmation window. MultiZilla's version shows the filename and domain on two separate lines and it enables you to change the relevant preferences and permissions with ease. Other features include bookmarking, copying the URL to the clipboard and downloading the extension/theme instead of installing it.

It also uses the following color scheme to differentiate the origin of the software installation:

Yellow: for cross domain installation (example: download initiated from but the actuall download starts from one of the download mirrors).

Orange: for blocked domains that somehow slipped through the software protection.

White: for domains which you add a download permission.

  • Drag and drop tabs (hold down ALT and drag a tab to its new position)
  • Improved JavaScript Console
  • Internet Explorer-style browser information messages when popups etc are blocked
  • Dual line tab tooltips show both Title and URL
  • Text on active tabs is bold
  • Hovering the mouse over tabs (optionally) shows the close tab icon
  • A mouse hover over tab will set the text style to bold
  • Modified View menu with 'MultiZilla Toolbar' added to the Show/Hide popup menu
  • Modified Bookmarks menu with 'Open any folder as Group'
  • Modified Tools menu with the 'Web Development' popup menu having an extra menu item: 'Validate This Page'
  • Modified Help menu
    • extra menu item 'MultiZilla Release Notes'
    • extra menu item 'About Cache' (opens two new tabs with information about Mem/Disk Cache)
    • extra menu item 'About Config' (displays all active preference settings)
  • New optional icon for URL location bar clearing
Additional Options

The optional GoogleBox (a separate installation) saves vertical screen space of your browser windows by incorporating the basic functionalities of the Googlebar into the MultiZilla toolbar, and there is a preference to hide the MultiZilla buttons when the GoogleBox is displayed.

Note: development of the GoogleBox has more or less stopped after the Googlebar, another project was released.

Image of the OSXilla Theme

OSXilla is a MultiZilla specific theme, which was an attempt to add a bit of the look and feel of OS X that looked ilke the screenshot above.

Note: OSXilla for MultiZilla was developed three years ago but all development has stopped until further notice!