Firefox 103: improved toolbar access, performance and more – Ghacks | Hot Mobile Press

Firefox 103 and Firefox 102.1 ESR will be released later today. The new version of Firefox 103 Stable fixes security issues, improves the browser’s performance and picture-in-picture mode, adds new keyboard access to the toolbar, and more.

Mozilla also releases updates to all Firefox development channels. Firefox Beta and Developer Edition will update to version 104, Firefox Nightly will reach version 105, and Firefox for Android will update to version 103 as it follows the stable release.


  • New access to the toolbar from the keyboard, which could break tab key workflows for Firefox users using the address bar and search bar.
  • Total Cookie Protection is enabled by default.
  • Firefox 103 fixes security issues. These have not yet been published.

Download and update Firefox 103

Firefox 103 and all other versions of the browser released today are distributed via the browser’s auto-update feature. Updates may not yet be available if you are reading this on the day of publication.

Direct downloads are also available. Follow the links below to Mozilla’s download site to download the new version of the browser.

New features and improvements in Firefox 103.0

Accessing the toolbar from the keyboard

Mozilla extended keyboard access to the toolbar in Firefox 103. Pressing Tab or Shift-Tab lets you switch between different groups in Firefox’s toolbars and now even on the webpage. Once a group has been reached, users can use the left and right arrow keys on the keyboard to navigate through the group. Pressing the spacebar or enter key activates the toolbar button.

Here is an overview of all available shortcuts:

  • Tab – switches to the group to the right of the current one.
  • Shift-Tab – switches to the group to the left of the current one.
  • Right arrow key – moves to the next element of the active group.
  • Left Arrow – Moves to the previous item in the active group.
  • Spacebar – Activates the active icon.
  • Enter — Activates the active symbol.
  • F6 – Back to the web page.
  • Ctrl-L – focuses the browser’s address bar.
  • Shift-F10 – Access to context menus of buttons.

Restore the old behavior

Firefox recovery tab behavior

Firefox users who prefer the old behavior, switching between the address bar and the search bar, can bring it back in the following way:

  1. Load about:config into the Firefox address bar.
  2. Select “Accept the risk and continue” when the warning page appears.
  3. Look for the browser.toolbars.keyboard_navigation setting.
  4. Activate the toggle button to set the setting to FALSE.

Other changes

  • Improved performance on high refresh rate monitors of 120Hz or higher.
  • Fixed an issue that could slow down Firefox startup.
  • Improved responsiveness on macOS under high CPU usage.
  • The “Enlarge text” accessibility setting on Windows applies to all user interface and content pages, not just system font sizes.
  • Firefox will be pinned to the Windows 10 or 11 taskbar during installation.
  • Required fields are now highlighted in PDF documents.
  • Picture-in-picture subtitles now support changing the font size. Also added subtitle support for Funimation, Dailymotion, Tubi, Hotstar and SonyLIV
  • Total Cookie Protection is (finally) enabled by default.
  • Non-breaking spaces are now preserved when copying text from forms.
  • Fixed WebGL performance issues on Linux when using NVIDIA binary drivers via DMA buf.


  • Native error types can now be serialized using the structured cloning algorithm.
  • ReadableStream, WritableStream, TransformStream are now transferrable objects.
  • Caches, CacheStorage and Cache now require a secure context; the properties/interfaces are undefined when used in an insecure context.

corporate changes

  • The configuration option to allow SHA-1 signatures has been removed.

known problems

none listed.

Security Updates/Fixes

Security updates are released after the web browser’s official release. The information published here can be found after approval.


Firefox 104 will be released on July 26, 2022.

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Firefox 103: improved toolbar access, performance and more

Product Name

Firefox 103: improved toolbar access, performance and more


Firefox 103 Stable improves performance and security and adds new keyboard access options.


Martin Brinkmann


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