Chapter 2.1.1: Firefox


Firefox is a highly-rated, and secure web browser that is installed by default in Ubuntu. It is a decent choice if one wants a secure, fast, yet relatively less resource-heavy browser.

Firefox has features of other web browsers and its own ones, such as:
  • Tabbed browsing
  • Scroll through tabs
  • Great plugins and add-ons
  • Favorites, bookmarks, pocket
  • Firefox account sync
  • Master password
  • UI customization with themes and toolbars
  • Advanced customization with about:config
  • Open source




To open a new tab in Firefox press the plus button on the right of the tab bar or press Control + t. To close a tab press the button with an x on the right side of the tab or press Control +W. To Open a new window in browsing press Control +N. To view your browsing history press the hamburger menu Library ‣ History or press Control +H. When you have the history sidebar you can search through your history where it says Search History. To change how to sort your history click the View label and select how you want to search your history. To view your downloaded files press the button that looks like three stacked books with a fourth leaning over ‣ Downloads.

To go back to a previous page in Firefox press the button pointing to the left or press Alt + Left arrow. To open the page you were previously browsing in a new tab middle click the back button. To go forward to a page you have visited before but have now gone back from press the button with the arrow pointing to the right or Alt + Right arrow. Middle click on the forward button to open the page you went back from in a new tab. To download a file directly to your local disk right click Save Link As file as and then you will get a dialog box to show where to save it. To save an image to your computer right click the image and select Save Image As.

To open a window with all of your downloads on it press Control+Shift+Y. To open PCManFM-Qt in the folder where you downloaded things right click and select on the download and select Open Containing Folder. To share a link with someone else for something you downloaded right click on the downloaded content right click and select Copy Download Link.

To open a window with all of your downloads press Control+Shift+Y. To open PCManFM-Qt in the folder where you downloaded things right click and select on the download and select Open Containing Folder. To get a link for someone else to download something right click on the downloaded content right click and select Copy Download Link. To open a downloaded file double click on it. To not have a download show in your history right click on it and select Remove from History. To clear all your download history right click and select Clear Downloads or press the Clear Downloads button at the top.


To have a list of all of your tabs press the downward pointing arrowhead button however this only appears if you have more tabs than fit on your screen normally. To switch the view of your tabs if you have more than on the screen press the right ward pointed arrowhead to move the visible part of the tab bar to the right. To move the visible part of the tab bar to the left press the leftward pointed arrowhead. To move a tab to where you want it left click the tab and drag it to the position you want the tab.

To open a new tab press the + button. To search through all your tabs you can click on the downward pointed arrow and select Search Tabs. To scroll down using the keyboard press Page Down. To scroll up the page with the keyboard press Page Up. To scroll all the way back up to the top press the Home key. To move all the way to the bottom of the page press the End key.

To go to a specific URL in the address bar you can type it in the main bar in the middle. If you have a URL in your clipboard you can paste it here or into the address bar right click Paste & Go. Or if you right click into the clipboard and not immediately go to the page and type in a sub page right click Paste and then type to go a specific sub page of the same site and then press Enter to go to the page. If you press F6 the cursor will select the address bar. If you want to search through the tabs you have open type % and then what you want to type in the address bar.

To bookmark a page press Control +D or Press the button with three horizontal lines and select Bookmarks ‣ Bookmark Current tab or right click on the tab and select Bookmark Tab. To access the bookmark again press that looks like three vertical lines and a slanted one and bookmarks and then select the bookmark you want. If you want a toolbar with your bookmarks on it right click on the address bar and select Bookmarks Toolbar.

To copy text in Firefox select it with the mouse and press Control +C or right click on it and select Copy. To paste text into Firefox press Control+ V or right click and select Paste. To cut text in Firefox select the text and press Control+X or right click and select Cut. To select all of the text on a page press Control+ A or right click and select Select All.

To view info on your webpage press Control+ I. To take a screenshot of a webpage right click and select Take Screenshot. Then select the part of the webpage you want by left clicking and dragging to select which part of the webpage to take a picture of. To save your screenshot press the Download button. To copy the screenshot to a clipboard press the Copy button. To cancel taking the screenshot press the X button.


To zoom in if you find the text on a web page to small press control + +. If you want to zoom out on the text or pictures press control + -. To reset to the original zoom press control + 0. To make Firefox fullscreen press F11 and to leave fullscreen simply press F11 again or in the hamburger menu press the two button with two diagonal arrows. While in fullscreen the tab bar will be hidden to change tab while you have Firefox in fullscreen move your mouse to the top of the monitor and the tab bar will popup. You can also type your zoom into Firefox from the hamburger menu Zoom field and press the + and -.

To print a webpage such as directions you can click the button with horizontal bars and select Print from the menu. You can also print by pressing Control+P.

If you want a menubar for Firefox right click the main toolbar and click the checkbox for Menu Bar. To reload a tab even one you are not on right click on the tab bar Reload Tab, press F5, or Control+R. To mute a tab even when you are not on it you can right clicking on the tab and then select Mute Tab or by pressing Control+m. To unmute a tab right click Unmute tab or press Control+m or press the speaker button with the line through it. To open a new copy of a tab right click on the tab bar and then select Duplicate Tab. To move a tab all the way to the left right click on the tab Move Tab ‣ Move to start. To move a tab all the way to the right right click on tab Move Tab ‣ Move to end. To move a tab to a new window right click on the tab and Move Tab ‣ Move to new Window. To pin a tab to have it open in Firefox every time you close and reopen Firefox right click on the tab and select Pin Tab. To have a tab not be pinned anymore right click on the pinned tab and select Unpin Tab. To open a new private window press Control+Shift+P or press the three horizontal lines and select New Private Window. If you want to bookmark a tab right click the tab and Bookmark tab. To close tabs to the right of the current tab right click on the tab and Close Multiple Tabs ‣ Close tabs to the right. To undo closing a tab right click on a tab and Reopen Closed Tab.


To search for a word in a webpage press Control+F and then type what you want to search for in the searchbar that pops up. At the right of this bar will show x of y matches to see how many matches are on your search. To jump to the next result press the Down arrow. To Move to the previous result press the Up arrow. To see everything that matches the search result check the Highlight All. To have Firefox match the capitalization of searches check the Match Case checkbox. To have Firefox search to only match the entire word check the Whole Words checkbox.


If you want to view your Firefox preferences you can type about:preferences into the address bar or Hamburger menu ‣ Preferences. To have your session restored each time you restart Firefox is to check the Restore previous session checkbox. The checkbox for Restore previous session checkbox restores your previous session’s tabs when you close Firefox. The tabs section has a checkbox to Open links in new tabs instead of new windows which is checked by default. The checkbox for When you open a link a new tab switch to it immediately switches to new tabs when you open them. To change your default fonts and colors use the Fonts and Colors section. To select the default font choose Default font from the field. To select a different font size change the Size field. To change the default zoom change the Default zoom field. To only zoom the text check the Zoom text only checkbox. The radio button group for Downloads lets you have a static location to save downloads or always ask to save files. To toggle drm controlled content check/uncheck the Play DRM-controlled content checkbox.

To tab on the left Home has settings for your home and opening of new tabs. The Homepage and new windows drop down lets you select the Firefox home or a blank page when you first open the browser. The New Tabs menu lets you choose Firefox Home or Blank Page when you open a new tab. The checkbox Web Search lets you toggle whether to show a web search on the Firefox homepage. To show the sites you visit the most check the checkbox Top Sites. To change how many rows of top sites to show use the drop down menu to the right of Top Sites. The checkbox Recommend by Pocket toggles links recommend by pocket. Uncheck the Sponsored Stories checkbox to not have sponsored stories from pocket. The Highlights checkbox allows site that you have saved or visited recently. To change how many rows of highlights are shown use the drop down menu to the right of Highlights.


To manage your search settings use the Search tab on preferences. The radio button for Search Bar changes whether you want a separate search bar or and integrated search bar for search and navigation. The Default Search Engine lets you change your default search engine. To toggle whether to search suggestions check/uncheck the Provide search suggestions. To end up showing search suggestions in the address bar when searching check the Show search suggestions in address bar results checkbox. To try to autocomplete searches before browsing history check the Show search suggestions ahead of browsing history in address bar results checkbox.

To change settings for How Firefox handles security and privacy settings use the Privacy & Security tab. To increase protection against trackers press the Strict button and to switch back press the Standard button. To send website you do not want to be track header always press the Always button.


Deleting Firefox user data will log you out of online accounts and if you do not know your password you will need to recover your password or you may lose access to online accounts.

To see what websites store data on you locally press the Manage Data button. To clear all Firefox data you currently have press the Clear Data button. To have Firefox get rid of all cookies when Firefox is closed check the Delete cookies and site data when Firefox is closed checkbox. To have Firefox not autofill logins and passwords uncheck the Autofill logins and passwords checkbox. To see your saved logins press the Saved Logins button. To chose what sites not to save passwords for certain websites press the Exceptions button.


Lubuntu currently ships with the latest version of Firefox, Firefox 93.

How to Launch

To open Firefox, click on the Firefox icon (red/orange fox covering a blue sphere) in Internet ‣ Firefox Menu. You can also type and run


from the terminal to run Firefox. You can also from the command line have Firefox directly open this manual with


You can also launch Firefox from the quick launch by left clicking on the Firefox icon. The icon for Firefox looks like a globe with a red fox circling around it. Yet another way to launch Firefox is to press the browser button on your keyboard.