Settings | Firefox Help

Add-on Badges

You’ll know if an extension is being regularly reviewed if it has one of the badges listed in this article.

Last updated: 1/15/24

Firefox Page Info window

The Firefox “Page Info” window gives you details about the page you're on. You can also use it to change permissions for the website.

Last updated: 9/29/24

Make Firefox your default browser on Windows

Learn how to make Firefox your default Web browser on Windows 10 and Windows 11.

Last updated: 9/26/24

Firefox options, preferences and settings

Settings panels give you access to Firefox settings. This article describes what types of settings are available in each panel.

Last updated: 3 weeks, 5 days ago

Manage local site storage settings

Learn about local storage, how to access storage settings, remove site data or set exceptions for websites to store data in Firefox.

Last updated: 7/3/24

Customize Firefox controls, buttons and toolbars

You can customize Firefox in many ways. This article explains how to customize Firefox controls, buttons and toolbars.

Last updated: 9/26/24

Connection settings in Firefox

Your organization or Internet Service Provider may offer or require you to use a proxy to connect to the Internet. Learn more.

Last updated: 9/30/24

Automatically fill in credit card and payment method data on Web forms

Manage credit card autofill settings in Firefox version 81 and above.

Last updated: 3/20/24

Firefox's performance settings

Firefox automatically uses settings that work best with your computer. You can always change these settings.

Last updated: 12/6/21

Restore the Menu bar in Firefox

The Firefox Menu bar (File, Edit, View, History, Bookmarks, etc.) may be hidden or missing. Learn how to restore the Menu bar.

Last updated: 12/24/23

Automatically fill in your address on web forms

Manage your settings for automatically filling out your address on web forms.

Last updated: 10/19/24

Personalized extension recommendations

Learn more about how Firefox occasionally recommends extensions you may find interesting and how to opt-out.

Last updated: 10/1/22

Tips for assessing the safety of an extension

Here are a few tips for assessing the safety of a third party extension.

Last updated: 3 weeks, 6 days ago

Back up and restore information in Firefox profiles

Firefox stores your personal information and settings in a profile folder. Learn how to back up and restore this important data.

Last updated: 9/3/24

Global Privacy Control

How to make Firefox advise websites that you visit not to sell or share your browsing information.

Last updated: 11/22/23

How to manage your camera and microphone permissions with Firefox

How to enable or block sites from accessing your camera and microphone on your desktop or mobile device.

Last updated: 2/21/24

Multi-Account Containers

Add Container tabs to Firefox with the Multi-Account Containers add-on, to separate your work and personal browsing.

Last updated: 3/1/24

Pop-up blocker settings, exceptions and troubleshooting

Learn what pop-up windows are and what settings Firefox has for blocking or allowing them.

Last updated: 8/4/22

Recover lost or missing Bookmarks

If your bookmarks have disappeared, it may be possible to recover them. Learn why bookmarks may seem to be missing and how to get them back.

Last updated: 3/26/24

Allow or block media autoplay in Firefox

Firefox prevents media from playing automatically on websites you visit, unless you grant permission. Learn more about this feature.

Last updated: 5/11/24

How to set the home page

Learn how to change what page you see when you first start Firefox, click the home button or open a new window.

Last updated: 3/10/24

Turn picture-in-picture mode controls on and off

How to hide the picture-in-picture controls

Last updated: 3/20/23

Manage your extensions using the extensions button in the toolbar

This article describes the new extensions button and how to manage your extensions and their permissions directly from the Firefox toolbar.

Last updated: 7/23/23

An extension changed my New Tab page or home page

View and disable extensions or add-ons that change the new tab page or home page.

Last updated: 3/10/24

Bookmarks Toolbar - Display your favorite websites at the top of the Firefox window

Learn how to use the Bookmarks toolbar in Firefox for quick access to often-used bookmarks.

Last updated: 7/15/24

Recovering important data from an old profile

If you need to create a new Firefox profile, find out how to recover your old Firefox data such as bookmarks, history and passwords.

Last updated: 1/18/24

Make Firefox your default browser

How to make Web links open in Firefox automatically by setting it as the default browser on your computer.

Last updated: 5/14/24

How do I restore my tabs from last time?

This article explains the different options you have for opening the tabs and windows you had open the last time you used Firefox.

Last updated: 12/1/23

Change your default search settings in Firefox

Learn how to change search settings in Firefox, such as your default search engine and whether or not search suggestions are displayed.

Last updated: 4/4/24

Add the Search bar to your Firefox toolbar

You can search the Web from the address bar or from the New Tab page. You can also add a separate Search bar to Firefox. Learn how.

Last updated: 7/20/24

JavaScript settings and preferences for interactive web pages

This article describes what JavaScript is and how to allow or block it on certain websites.

Last updated: 6/6/22

Font size and zoom - increase the size of web pages

Zoom is a feature which allows you to increase or decrease either the size of a web page or the size of the text. This article explains how it works.

Last updated: 4/17/24

Use the Firefox Sidebar to access bookmarks, history and synced tabs

The Firefox Sidebar feature lets you access your bookmarks, history and synced tabs conveniently at the click of a button.

Last updated: 11/19/18

Add or remove a search engine in Firefox

This article explains how to add or remove the search engines that Firefox uses.

Last updated: 3/20/24

Switch from Chrome to Firefox

Firefox can automatically move bookmarks, passwords, history and other preferences from Chrome without deleting it or interfering with any of its settings.

Last updated: 8/9/23

Compact mode workaround in Firefox

Learn about a workaround to activate compact mode, if you need to. This feature isn't supported and we still recommend using normal mode.

Last updated: 6/6/22

How to disable the Enterprise Roots preference

How to disable the Enterprise Roots preference to fix TLS connection errors caused by antivirus software, without compromising security.

Last updated: 6/5/22

Restore previous session - Configure when Firefox shows your most recent tabs and windows

Firefox can restore windows and tabs that were open the last time you used it. Learn how to use and configure it.

Last updated: 8/7/23

Control audio or video playback with your keyboard

This page explains the technical documentation on how to control media in Firefox by using the Media Session API.

Last updated: 8/21/21

Use Firefox in another language

How to display Firefox in a different language.

Last updated: 1/8/23

Recommendations from Firefox

This article describes why and how extension recommendations are made, including how to turn off recommendations.

Last updated: 1 week, 2 days ago

Manage optional permissions for Firefox extensions

Learn how you can manage optional permissions for extensions in the Firefox Add-ons Manager.

Last updated: 4 weeks ago

How do I use the Firefox spell checker?

Firefox's spell checker streamlines writing by auto-detecting errors, offering quick fixes, and custom dictionary additions for flawless text.

Last updated: 2/9/24

Customize your New Tab page to hide or display content

Learn how to show or hide content on your Firefox New Tab page, such as changing which sections to display or showing a blank new tab page.

Last updated: 7/19/24

About Picture-in-Picture in Firefox

The Picture-in-Picture feature allows you to pop videos out of their webpage, so you can watch while continuing to work in other tabs.

Last updated: 8/23/24

How to restore a browsing session from backup

There are special situations where a browsing session may be lost. This article will show you how to recover your lost session.

Last updated: 1 week, 2 days ago

Open Firefox automatically when you start your computer

Enable Firefox to launch automatically when Windows starts, providing quicker access to your browser and enhancing your browsing experience.

Last updated: 2 weeks, 1 day ago

Change the fonts and colors websites use

This article describes how to customize the way you see websites by choosing font styles and colors that will override those used by the websites.

Last updated: 5/11/24

Search with the Firefox address bar

Learn how the address bar makes it easy to search the Web, find bookmarks or pages you visited before, use search engines and more.

Last updated: 7/14/24

Tab preferences and settings

Learn how to customize tab settings in Firefox to enhance your browsing experience.

Last updated: 9/2/24

Choose display languages for multilingual web pages

How to choose your preferred languages for multilingual web pages.

Last updated: 1/22/19

Use bookmark folders to organize your bookmarks

Firefox allows you to group your bookmarks into folders to organize them by topic or task, etc. This article explains how to organize your bookmarks this way.

Last updated: 3/9/21

Usernames and passwords are not saved

Firefox has a password management feature to store usernames and passwords for logging in to websites. Learn why logins might not be saved.

Last updated: 2/8/24

View PDF files using Firefox’s built-in viewer

You can view PDF files directly in Firefox with the built-in viewer. Learn how to use the PDF viewer and how to resolve common problems.

Last updated: 9/3/24

Setting Firefox as the default browser does not work - What to do

Learn how to make sure Firefox is the default browser if setting that option didn't work, or it got changed by another program.

Last updated: 6/30/23

Share data with Mozilla to help improve Firefox

The Telemetry feature sends us performance and usage data to help measure how Firefox behaves in the real world and improve it. Learn more.

Last updated: 10/6/24

What if I'm locked out of Two-Step Authentication?

Disable two-step authentication or use a backup authentication code to regain access to your account if you've been locked out of two-step authentication login.

Last updated: 11/4/23

Change the program used to open email links

Learn how to change the email program that Firefox opens when you click a “mailto” link, or use the “Email Link” and “Email Image” features.

Last updated: 12/11/23

Disable or re-enable Pocket for Firefox

The Pocket save and recommendations features are included with Firefox by default. Learn how to disable or remove Pocket from Firefox and how to re-enable it.

Last updated: 6/29/24

Dedicated profiles per Firefox installation

Different Firefox installations now use a separate profile to store your bookmarks, passwords and other settings. Learn more.

Last updated: 10/24/23

Drag and Drop errors with Firefox Launcher Process enabled and Windows UAC disabled - How to Fix

How to fix Firefox drag-and-drop errors when running Windows as Administrator with UAC disabled and the Launcher Process enabled.

Last updated: 7/18/20

Secure Firefox passwords with device sign-in

Learn more about this Firefox anti-snooping feature designed to protect your logins and passwords from unauthorized access.

Last updated: 6/11/24

Choose your preferred PDF viewer in Firefox

Learn how to set a different PDF viewer for downloaded files in Firefox instead of using the built-in viewer.

Last updated: 9/4/24

Cannot remove an add-on (extension or theme)

This article describes how to uninstall an extension or theme that can't be removed normally. This includes problematic toolbars and search bars.

Last updated: 7/2/22

Manage file types and download actions in Firefox

Learn how Firefox handles files with different content types and how to change what Firefox does when you click on or download a file.

Last updated: 9/28/24

Print simplified, clutter-free pages in Firefox

Firefox lets you print pages in a simplified format that strips away clutter like buttons, ads, and background images. Learn more.

Last updated: 8/22/24

Access hidden tabs in Firefox

Firefox lets you know when there are tabs hidden in the background so you can access them easily.

Last updated: 7/3/18

Change website appearance settings in Firefox

Change Firefox settings to adjust the appearance of the websites you visit.

Last updated: 2 weeks, 1 day ago

Add alt text to images in your PDFs using Firefox

Image alt text is crucial for document accessibility. Learn how to create it manually or with our Firefox AI-powered feature for PDF files.

Last updated: 9/22/24

Access your add-ons with a Mozilla account

The addons.mozilla.org (AMO) site is using Mozilla accounts to offer a more integrated experience across all Mozilla services and products.

Last updated: 7/25/24

Importing Safari data into Firefox

Import data from your Safari browser into Firefox. You must enable Full Disk Access on macOS version 10.14 (Mojave).

Last updated: 7/26/23

Block and unblock websites with parental controls on Firefox

This article explains how to block websites or filter website content in Firefox that may be offensive or inappropriate for children.

Last updated: 8/11/22

What to do if you can't download or save files

If you can't download or save files with Firefox, this article explains the steps to take to fix this problem.

Last updated: 6/6/22

Accessibility features in Firefox - Make Firefox and web content work for all users

Learn about features that make Firefox and web content accessible if you have vision problems or limited ability to use a keyboard or mouse.

Last updated: 9/2/24

Firefox starts automatically when I restart Windows

If Firefox was open when Windows shut down, Firefox may reopen automatically the next time you start Windows. You can disable this feature.

Last updated: 6/6/22

Assign shortcuts to search engines

How to search faster with search shortcuts.

Last updated: 4/3/24

Manage extension shortcuts in Firefox

Manage your add-on shortcuts through the Manage Preferences menu in about:addons.

Last updated: 7/8/22

Review installed extensions

Reviewing the extensions you have installed periodically can make it harder for malicious extensions to put your security and privacy at risk.

Last updated: 7/1/19

How to fix Pocket login issues

Learn how to add an exception for Pocket in Firefox, to prevent being prompted to sign in to Pocket when saving to the site.

Last updated: 10/25/23

Firefox Browser welcome pages - helping you get more from Firefox products and services

When you open Firefox after reaching a certain user milestone, you’re shown a Firefox Browser welcome page in a new tab. Learn more.

Last updated: 11/2/22

Tab context menu

Explore the features available in the tab context menu in Firefox, including options for managing and organizing your tabs.

Last updated: 8/7/24

Remove the Other Bookmarks folder from the Bookmarks Toolbar

How to remove the Other Bookmarks folder from the Bookmarks Toolbar in Firefox

Last updated: 6/6/22

How to configure Close Tab warnings in Firefox

Learn how to enable or disable the close tab warning that shows when you're about to close multiple tabs, in Firefox version 94 and above.

Last updated: 11/3/21

How file downloads are handled in Firefox

This article describes changes to how downloads are handled and answers some frequently asked questions.

Last updated: 10/3/24

Built-in themes in Firefox - alternative to complete themes

How to enable Firefox's built-in themes.

Last updated: 11/25/22

How is Facebook Container different from Multi-account Containers?

The difference between Facebook Container and Multi-Account Containers

Last updated: 4/6/18

Sync logins in Firefox desktop

How to enable sync for logins and passwords on Firefox desktop

Last updated: 3/19/24

Pocket sponsored stories on new tabs

Pocket occasionally partners with select publishers and brands to deliver sponsored stories on the Firefox New Tab page. Learn more.

Last updated: 7/4/24

Personalize Firefox with colorways

Personalize your browsing experience with Colorways themes for Firefox, created in partnership with an industry color specialist.

Last updated: 8/8/24

Restore the default Smart Bookmarks Folders

Learn how to restore the default Most Visited or Recent tags "Smart Bookmarks" folders if you deleted them.

Last updated: 6/6/22

How to fix preferences that won't save

This article tells you how to fix issues where Firefox can't save some or all of the settings that you try to change.

Last updated: 7/16/22

Changes to toolbars and window sizes are not saved

If Firefox doesn't remember changes you've made to toolbar customizations or to browser window size or position, this article has solutions.

Last updated: 11/9/22

Firefox doesn't save web form entries

Firefox's autocomplete feature lets you save and reuse text field entries in web forms. If you're no longer able to auto-fill your forms, follow these steps.

Last updated: 11/28/18

HTML5 audio and video in Firefox

Firefox can handle audio and video content on web pages and can open some media files. Learn about supported formats and managing playback.

Last updated: 5/12/24

Closing multiple Tabs - option to disable warning

Firefox warns when multiple tabs are closed, there is an option to disable this warning if not required

Created: 10/26/12

How to disable the built-in PDF viewer and use another viewer

Firefox has a built-in PDF viewer. We'll show you how to disable it and use another PDF viewer, like Adobe Reader, instead.

Last updated: 5/29/20

Cliqz Recommendations in Firefox

Learn about Cliqz recommendations in Germany.

Last updated: 4/20/18

Feed reader replacements for Firefox

Firefox's built-in support for web feeds and Live Bookmarks ended in December 2018 with version 64. Learn more and find alternatives.

Last updated: 12/19/19

How to use collections on addons.mozilla.org

How to create, edit, share, and delete a collection on addons.mozilla.org.

Last updated: 10/24/23

Disable high contrast mode in Firefox

How to disable high contrast mode if it's causing problems on some web pages.

Last updated: 7/17/23

Configuring Networks to Disable DNS over HTTPS

At Mozilla, we believe that DNS over HTTPS (DoH) is a feature that everyone should use to enhance their privacy. Learn more.

Last updated: 4/16/22

Changing your two-step authentication device for your Mozilla account

What to do if you have two-factor authentication (2FA) setup on your account and need to migrate to a new device or phone.

Last updated: 10/23/23

My privacy settings were changed from Custom to Standard

If your Custom settings match the settings in Standard, you will be switched back to Standard. This will not affect your settings.

Last updated: 3/24/21

End of support for Adobe Flash

Like other browsers, Firefox has ended support for Adobe Flash. Learn about the details here.

Last updated: 3/6/21

Mozilla Voice Server Proxy Retiring

Mozilla is ending official support for the Mozilla Voice Proxy Server and its related projects. Learn more about the retirement of server and extensions.

Last updated: 2/1/21

Site Permission Add-ons

Sites can ask to install permission add-ons that modify Firefox’s default security behavior to give them extra privileges. Learn more.

Last updated: 1/2/23

Wrong home page opens when I start Firefox - How to fix

Learn how to restore your home page if a third-party software vendor changes it so that their page always opens when you launch Firefox.

Last updated: 6/17/15

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

Volunteer