Firefox is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. Firefox was created in 2002, under the name "Phoenix" by the Mozilla community. So Now here the shortcut keys for Firefox.
Shortcut Manage with Control and Alphabet keys
Ctrl + (- or +) Increase or decrease the font size
Ctrl + D Add a bookmark for the page currently opened.
Ctrl + F Access the Find option
Ctrl + H View browsing history.
Ctrl + I Display available bookmarks.
Ctrl + J Display the download window.
Ctrl + K or Ctrl + E Move the cursor to the search box.
Ctrl + L Move cursor to address box.
Ctrl + N Open New browser window.
Ctrl + O Access the Open File window
Ctrl + P Print current page or frame.
Ctrl + T Opens a new tab.
Shortcute Manage with Control and Shift Keys
Ctrl + Shift + B Open the Bookmarks window
Ctrl + Shift + J Open the Browser Console
Ctrl + Shift + P Open a new Private Browsing window.
Ctrl + Shift + T Undo the close of a window.
Ctrl + Shift + W Close the Firefox browser window.
Shift + Spacebar Moves up a page at a time.
Some more shortcute keys for Firefox
Ctrl + F4 Closes the currently selected tab.
Ctrl + F5 Refresh the page
Ctrl + Enter Quickly complete an address
Ctrl + Tab Moves through each of the open tabs.
F5 Refresh current page, frame, or tab.
F11 Display the current website in full screen mode
Esc Stop page or download from loading.
Spacebar Moves down a page at a time.
Alt + Home Open your home page.