Make Firefox your default browser on Windows
Learn how to make Firefox your default Web browser on Windows 10 and Windows 11.
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About Add-on Badges
You’ll know if an extension is being regularly reviewed if it has one of the badges listed in this article.
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Customize Firefox controls, buttons and toolbars
Firefox offers many ways to make your browsing experience your own. Learn how to customize the browser’s controls, buttons, and toolbars.
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View site information with Page Info
Learn what the Firefox Page Info window shows about a site and what settings you can change directly.
Last updated: 3 weeks ago
Refresh Firefox - reset add-ons and settings
A Refresh can fix many issues by restoring Firefox to its default state while saving essential information like bookmarks and passwords.
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Block generative AI features with Firefox AI controls
Learn which AI features are available in Firefox and how to control or disable them in settings.
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Import data from another browser
We'll show you how to import bookmarks, preferences, browsing history, passwords and other information from another browser.
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Change Firefox options, preferences and settings
Learn how to access and adjust Firefox settings, including privacy, startup behavior, downloads and more.
Last updated: 5 days ago
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.
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Personalized extension recommendations
Learn more about how Firefox occasionally recommends extensions you may find interesting and how to opt-out.
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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: 6 days ago
Export Firefox bookmarks to an HTML file to back up or transfer bookmarks
This article explains how to export your bookmarks to an HTML file, which can be used as a backup or for importing into another web browser.
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On-device AI models in Firefox
Learn what on-device AI models are and how you can manage them.
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Firefox's performance settings
Firefox automatically uses settings that work best with your computer. You can always change these settings.
Last updated: 2 weeks ago
Firefox Password Manager - Alerts for breached websites
Firefox's password management will show you alerts about logins potentially exposed in data breaches and passwords that may be vulnerable.
Last updated: 1 week ago
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.
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Firefox Translations
The built-in Firefox full page translation feature allows you to seamlessly browse the web in your preferred language. Learn more.
Last updated: 1 week ago
Restore bookmarks from backup or move them to another computer
Learn how to restore your bookmarks from the automatic backups that Firefox creates, save and restore your own backups, and move bookmarks to another computer.
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Manually back up and restore Firefox profile data
Firefox stores your personal data and settings in a profile folder. Learn how to back up and restore this important information.
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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: 6 days ago
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.
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Global Privacy Control
How to make Firefox advise websites that you visit not to sell or share your browsing information.
Last updated: 1 week ago
JavaScript settings and preferences for interactive web pages
This article describes what JavaScript is and how to allow or block it on certain websites.
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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.
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Turn picture-in-picture mode controls on and off
How to hide the picture-in-picture controls
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Automatically fill in credit and debit card payment methods data on web forms
Manage autofill settings for credit and debit card payment methods in Firefox
Last updated: 1 week ago
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.
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Extension data collection
When you first install a Firefox extension, you may be asked to grant certain permissions. These permissions let you know what the extension can access or modify in Firefox. This article explains what those permission requests mean, how to evaluate them, and how to manage them for better privacy and control.
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How to restore a browsing session from backup
There are special situations where a Firefox browsing session may be lost. This article will show you how to recover your lost session.
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Get started with the Mozilla VPN extension
The VPN extension complements the main VPN app, offering flexible controls to secure your browsing activity and customize VPN settings without altering your device-wide VPN protection.
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Customize keyboard shortcuts in Firefox
Learn how to use and customize keyboard shortcuts (hotkeys) in Firefox to navigate faster and boost productivity on Windows, macOS, and Linux.
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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: 2 weeks ago
Use Firefox in Full Screen mode
The Full Screen feature lets you expand the Firefox browser for the current page to fill up your whole screen. This article explains how to turn it on and off.
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Tips for assessing the safety of an extension
Here are a few tips for assessing the safety of a third party extension.
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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 days ago
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.
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Why does Mozilla disable some add-ons from running in Firefox?
Add-ons that violate Mozilla's Add-on Policies or jeopardize user safety and privacy may be restricted or blocked from running in Firefox.
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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: 6 days ago
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.
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Automatically fill in your address on web forms
Manage your settings for automatically filling out your address on web forms.
Last updated: 1 week ago
Quick actions in the Firefox search bar
This article refers to the new Quick actions feature available in the Firefox address bar drop-down menu.
Last updated: 1 day ago
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.
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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.
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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: 2 weeks ago
Web Push notifications in Firefox
Web Push allows websites to notify users of new messages or updated content while Firefox is open.
Last updated: 2 days ago
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.
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Sponsors on the home page and New Tab page
Working with its advertising partners, Mozilla may place sponsored shortcuts on the default Firefox home page and New Tab page. Learn more.
Last updated: 1 week ago
Watch DRM content on Firefox
Learn about Digital Rights Management (DRM) content in Firefox and how to disable and re-enable DRM playback or troubleshoot problems.
Last updated: 1 day ago
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.
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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: 6 days ago
Reset Firefox preferences to troubleshoot and fix problems
When troubleshooting Firefox problems, resetting user preferences can help pinpoint the issue. This article explains how to do this.
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Customize items on your Firefox New Tab page
Learn how to customize different items on your Firefox New Tab page.
Last updated: 3 days ago
Manage Firefox search settings
Learn how to change search settings in Firefox, such as your default search engine and whether or not search suggestions are displayed.
Last updated: 1 week ago
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: 6 days ago
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.
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Access AI chatbots in Firefox
Using AI chatbots is optional. Learn more about the providers you can choose, how to remove the shortcut and what to keep in mind when using AI chatbots.
Last updated: 1 day ago
Use the sidebar to access tools and vertical tabs
How to use the updated sidebar introduced in Firefox version 136, to access multiple tools and to turn on vertical tabs.
Last updated: 2 weeks ago
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 days ago
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: 1 week 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: 2 weeks ago
How to reset the default user agent on Firefox
Learn how to reset your Firefox "user agent" so that websites can detect your correct browser and version and work the way they should.
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Use Firefox in another language
How to display Firefox in a different language.
Last updated: 1 week ago
Manage extension shortcuts in Firefox
Manage your add-on shortcuts through the Manage Preferences menu in about:addons.
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How to pin and unpin Firefox from the taskbar on Windows 10 and Windows 11
Learn how to pin and unpin Firefox from the taskbar in Windows 10 and Windows 11.
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Change website appearance settings in Firefox
Change Firefox settings to adjust the appearance of the websites you visit.
Last updated: 2 weeks ago
Disable Mozilla VPN protection for a specific website
The Mozilla VPN extension allows you to choose the websites you wish to protect and the ones you don't. This article describes how it works.
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Change your location for a specific website
The Mozilla VPN extension allows you to set a particular location through which you want to access a given website. Learn about this feature here.
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Import bookmarks and other data from Google Chrome
Firefox lets you easily import bookmarks and other data from Google Chrome. This article gives you step-by-step instructions for getting it done.
Last updated: 2 days ago
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: 2 weeks ago
Audio and video files in Firefox
Learn which audio and video formats are supported in Firefox across desktop and mobile platforms.
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Add or remove a search engine in Firefox
This article explains how to add or remove the search engines that Firefox uses.
Last updated: 1 week ago
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.
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Dedicated profiles per Firefox installation
Different Firefox installations now use a separate profile to store your bookmarks, passwords and other settings. Learn more.
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Control whether Firefox automatically fills in forms
Firefox can remember what you've entered in forms on web pages. This article explains how to autofill this info for you or how to prevent it from being filled in.
Last updated: 5 days ago
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.
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Pop-up blocker settings, exceptions and troubleshooting
Learn how to block or allow pop-ups in Firefox and how third-party redirect blocking enhances your browsing protection.
Last updated: 2 days ago
Import Bookmarks from an HTML file
This article explains how you can take bookmarks saved in an HTML file and add them to your Firefox bookmarks.
Last updated: 2 days ago
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.
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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: 1 week ago
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 days ago
How do I use the Firefox spell checker?
Firefox's spell checker streamlines writing by auto-detecting errors, offering quick fixes and with custom dictionary additions for flawless text.
Last updated: 1 day ago
Export bookmarks to Safari
You can export your Firefox bookmarks for use in other browsers. This guide shows you how to export your Firefox bookmarks and import them into Safari.
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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: 5 days ago
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.
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Multi-Account Containers
Add Container tabs to Firefox with the Multi-Account Containers add-on, to separate your work and personal browsing.
Last updated: 6 days ago
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: 2 days ago
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.
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How to add the translate add-on to Firefox
Seamlessly translate webpages in Firefox.
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Access hidden tabs in Firefox
Firefox lets you know when there are tabs hidden in the background so you can access them easily.
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Recommendations from Firefox
This article describes why and how extension recommendations are made, including how to turn off recommendations.
Last updated: 2 days ago
Choose display languages for multilingual web pages
How to choose your preferred languages for multilingual web pages.
Last updated: 2 weeks ago
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.
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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: 6 days ago
Import login and password data from a file
Starting in Firefox version 116, you can import login and password information from a ''.csv'' file. Learn How.
Last updated: 4 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: 1 week ago
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: 3 days ago
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.
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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: 1 week ago
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: 1 week ago
What to do if another extension interferes with the Mozilla VPN extension
If you're using the Mozilla VPN extension and encounter a message about other extensions interfering, follow this steps to fix it.
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Harmful add-on protection
If you have installed an add-on that triggers the opening of a known malicious website, Firefox will block it to protect you.
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How to search IMDB, Wikipedia and more from the address bar
Learn how to search a specific website directly from the Firefox address bar.
Last updated: 1 day ago
Restore the default Smart Bookmarks Folders
Learn how to restore the default Most Visited or Recent tags "Smart Bookmarks" folders if you deleted them.
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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 preference settings that you try to change.
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Import Bookmarks and other data from Microsoft Edge
Firefox lets you import bookmarks and other data Microsoft Edge. This article gives you step-by-step instructions for getting it done.
Last updated: 2 days ago
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: 1 week ago
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: 6 days ago
Tab preferences and settings
Learn how to customize tab settings in Firefox to enhance your browsing experience.
Last updated: 3 days ago
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.
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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
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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.
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Use the Firefox Sidebar to access bookmarks, history, passwords 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: 2 weeks ago
Get help with Firefox Developer Edition
Firefox now has a version built especially for developers. Learn where to get help.
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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.
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Re-enable multi-process support disabled by Windows utilities
Some Windows accessibility tools might turn off Firefox's multi-process support. Here's how to re-enable it.
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Built-in themes in Firefox - alternative to complete themes
How to enable Firefox's built-in themes.
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File system paths on Linux are always treated as UTF-8
On Linux, the profile path is required to be valid UTF-8. Names of downloaded files are encoded in UTF-8 regardless of glibc and glib settings.
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Facebook Container isn't working
What to do if Facebook Container doesn't work.
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How is Facebook Container different from Multi-account Containers?
The difference between Facebook Container and Multi-Account Containers
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How to use collections on addons.mozilla.org
How to create, edit, share, and delete a collection on addons.mozilla.org.
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Assign shortcuts to search engines
How to search faster with search shortcuts.
Last updated: 1 day ago
Disable high contrast mode in Firefox
How to disable high contrast mode if it's causing problems on some web pages.
Last updated: 2 days ago
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.
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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: 1 day ago
Change 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.
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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.
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Importing Safari data into Firefox
Learn now to import data such as bookmarks, browsing history, and custom preferences from your Safari browser into Firefox.
Last updated: 4 days ago
Tab context menu
Explore the features available in the tab context menu in Firefox, including options for managing and organizing your tabs.
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End of support for Adobe Flash
Like other browsers, Firefox has ended support for Adobe Flash. Learn about the details here.
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Remove the Other Bookmarks folder from the Bookmarks Toolbar
How to remove the Other Bookmarks folder from the Bookmarks Toolbar in Firefox
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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.
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Text Encoding no longer available in the Firefox menu panel
The Firefox menu panel no longer has a Text Encoding submenu. It is still available in the Menu bar View menu and as an optional toolbar button.
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Personalize Firefox with colorways
Personalize your browsing experience with Colorways themes for Firefox, created in partnership with an industry color specialist.
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How file downloads are handled in Firefox
This article describes changes to how downloads are handled and answers some frequently asked questions.
Last updated: 5 days ago
My default search engine changed after updating Firefox
After updating Firefox, you may have noticed that your default search engine has been changed. Learn more.
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Recommended Firefox privacy and security settings for families
Firefox lets you customize privacy and security settings so you and your family can browse safely online. Learn more.
Last updated: 1 day ago
X-Mouse Button Control in Firefox 110
Learn about an issue with X-Mouse Button Control in Firefox 110 for Windows.
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Why aren’t my add-ons working on some websites?
Learn why some Firefox extensions have been disabled on certain websites, how to manage these limits, and explore alternative solutions.
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How will DNS work when using the VPN extension?
Learn how your DNS (Domain Name System) settings work while using your Mozilla VPN extension.
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A program on your computer interferes with the Mozilla VPN extension
You got a message saying that “A program on your computer may be causing issues with the Mozilla VPN extension”. Here's how you can fix that.
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Manage the Mozilla VPN extension preferences
After configuring VPN preferences for different websites, you may want to review them to confirm they meet your expectations. Follow these steps to do so.
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Customize your wallpapers
Firefox allows you to customize your Firefox New Tab page with a selection of wallpapers. This is how.
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Orbit Frequently Asked Questions
This article addresses frequently asked questions about Orbit.
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Change your default browser
Learn how to change your default browser on Windows, macOS, and Linux in a few simple steps.
Last updated: 1 week ago
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.
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