Firefox 89 ships with changes to the user interface


Firefox 89.0 is the latest stable release of the Firefox web browser. It was released on June 1, 2021 and includes major user interface changes, a new custom theme, and more. The main focus of the release is on redesigning the user interface that affects key user interface elements such as the main toolbar, address bar, menus, prompts the browser displays, and tabs.

All Firefox channels get a version at about the same time. Firefox 88 Stable will be updated to version 89, Beta and Developer Editions will be updated to version 90 and Firefox Nightly to version 91. Firefox ESR, the long-term support version, will be updated to version 78.11.

You can check out the Firefox 88 version overview here in case you missed it.


  • Firefox 89 fixes security issues.
  • Firefox 89 introduces a user interface update that changes many elements of the web browser.

Download and update Firefox 89.0

Select Menu> Help> About Firefox to check the installed version and manually check for updates. The browser should get the new version when you check on the afternoon of June 1st or later.

Manual downloads are also available. The following pages list direct downloads for supported Firefox channels.

New functions and improvements

The new user interface for Firefox

Firefox new user interface

Firefox 89 offers a new interface that is “easier to use” and, according to Mozilla, has been modernized. The browser has a new tab and address bar design, new menus and prompts. Some items have been removed or renamed. In the new version, users should see fewer interruptions and surf with fewer distractions.

Tip: Check out our guide on how to repair the Firefox 89 user interface in case you want to change any of the elements or restore classic options.

Here are the most important changes:

Number 1: the tab bar

Firefox tabs

Floating tabs provide clear information and interface notes when you need them, such as: B. Visual indicators for audio controls. The rounded design of the active tab supports focus and signals the ability to easily move the tab if necessary.

The tab bar supports normal and touch densities for new users only. Existing users who have used the compact tab design should keep it when Firefox updates. New users can restore compact mode density by following our guide.

The density determines the height of the tabs and the tab bar. Tabs are larger in Firefox 89 and show a second line on media playback pages (see screenshot above).

Number 2: the menu

Firefox menu

Clear, optimized menus: Reorganized and prioritized menu contents according to use. Updated labels and removed iconography.

Most of the icons have been removed from the Firefox main menu and some items have been removed or changed:

  • Log in to Firefox has been renamed Sync and Save Data.
  • The protection dashboard has been removed. A click on the shield symbol to the left of the address shows the link.
  • New tab has been added.
  • The zoom line has been moved down in the menu.
  • Edit line has been removed.
  • Library has been removed. Bookmarks, history and downloads are now listed directly in the menu.
  • Logins and passwords have been removed.
  • Add-ons is now called Add-ons and Themes.
  • Customize has been removed.
  • Open file has been removed.
  • Searching in this page means searching in page.
  • More is now more tools.
  • Web Developer can now be found under More Tools.

Most of the removed options are accessible elsewhere in Firefox.

The context menu with the right mouse button has also been redesigned. On Mac OS X, it now has a native design.

Number 3: Updated prompts

new prompts Firefox

Updated prompts: Infobars, panels, and modals have a cleaner design and language.

Firefox presents all kinds of prompts to the user, such as when an extension is installed or when a site requests permissions to access the microphone or other devices.

Other changes

  • Full cookie protection is activated in private browser mode to further limit cookie-based tracking.
  • PDF files now display signatures when viewed in Firefox.
  • Added AllowedDomainsForApps policy. Defines the domains that are allowed to access Google Workspace.
  • Updated ExtensionSetting policy to turn off updates for individual extensions.
  • The settings policy supports settings that begin with gfx. or layers. now.
  • Firefox on Mac OS supports the system’s elastic overscroll effect.
  • Support for intelligent zooming by double-tapping with two fingers or “with a single finger” with a Magic Mouse
  • Several fixes for Firefox on Mac OS X.

Developer changes

  • Changes in the theme API due to the redesigned interface. This affects tab_background_separator and Toolbar_field_separator, which are no longer supported, as well as tab_line and Toolbar_vertical_separator, which behave differently.
  • Event timing API is supported.
  • CSS media query with forced colors is supported.

known problems

None listed.

Security updates / fixes

Security updates will be released after the web browser is officially released. You will find the information published here after it is published.


Firefox 90 will be released on July 13, 2021. It will be the first version of the browser that no longer supports the FTP protocol.

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Additional information / sources


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Firefox 89 ships with changes to the user interface


Firefox 89.0 features a new user interface with redesigned tabs, menus, prompts, and more.


Martin Brinkmann


Ghacks technology news



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