Most Important Function F1 to F12 Keys


As I have told before, function keys have a variety of functions depending on the operating system you have installed on your computer. The software program currently open can change depending on the process of operating system of these keys.

Most important Function F1 to F12 Keys :


  • It is a help key as a help screen is opened when this key is pressed in case of almost every program.
  • Windows Key + F1 opens the Microsoft Windows help and support center.
  • By pressing this key you can open the task pane.


  • You can rename a highlighted icon, file, or folder in Windows operating system.
  • In Microsoft Word you can open a document window by pressing (Alt + Ctrl + F2 ) simultaneously.
  • In Microsoft Word (Ctrl + F2) shows the print preview window.


  • At the windows desktop, F3 key opens a search feature for many programs.
  • In MS-DOS or Windows command line F3 helps to repeat the last command.
  • In Microsoft Word (Shift + F3) change the text from upper case to lower case or a capital letter at the beginning of each word.
  • In Microsoft Outlook Windows Key + F3 opens the Advanced find window.
  • F3 key opens Mission Control on an Apple computer running Mac OS X.


  • In Windows Explorer and Internet Explorer F4 key opens the address bar.
  • F4 key repeats the last action performed (Word 2000+)
  • In Microsoft Windows (Alt + F4) closes currently active window and (Ctrl + F4) closes the open window within the currently active window.


  • F5 key starts a slideshow in PowerPoint.
  • By pressing F5 you can refresh or reload the page or document window of your browser.


  • (Ctrl + Shift + F6) opens another open Microsoft Word document.
  • By pressing F6 key, you can move the pointer to the Address bar in Internet Explorer, Mozilla Firefox and most other Internet browsers.
  • You also can decrease laptop speaker volume by pressing F6 key (on some laptops)


  • Generally used for grammar and spell checking of a document in Microsoft programs, for example Microsoft Word, Outlook etc.
  • (Shift + F7) starts Thesaurus checking on the highlighted word.
  • In Mozilla Firefox, you can turns on Caret browsing by pressing F7 key.
  • You can increase laptop speaker volume by pressing F7 key(on some laptops)


  • Enter the Windows startup menu, generally to access Windows Safe Mode.
  • To access the Windows Recovery system (in some computers), but you may need a Windows installation CD.
  • In Mac OS displays a thumbnail image for every workspace.


  • In Microsoft Word, refreshes document.
  • In Microsoft Outlook, sends and receives e-mail.
  • In Quark 5.0 opens the Measurements toolbar.
  • Decrease the brightness of laptop screen (on some laptops)
  • With Mac OS 10.3 or later, shows a thumbnail for each window in a single workspace.
  • (Fn key+ F9) opens Mission Control on an Apple computer running Mac OS X.


  • In Microsoft Windows F10 key activates menu bar of an open application.
  • (Shift + F10) is the same as right-clicking of a mouse on a highlighted icon, file, or Internet link.
  • Lets you access the hidden recovery partition on HP and Sony computers.
  • With Mac OS 10.3 or later, displays all open Windows for the active program.


  • In all modern Internet browsers, F11 key helps to enter and exit full screen
  • (Ctrl + F11) starts to access the hidden recovery partition on many Dell computers.
  • Lets you to Access the hidden recovery partition on eMachines, Gateway, and Lenovo computers.
  • With Mac OS 10.4 or later, you can hide all open windows and shows the Desktop by pressing F11 key.


  • In Microsoft Word, F12 key opens the Save as window.
  • By pressing (Ctrl + F12) at the same time you can open a document in Word.
  • You can save the Microsoft Word document by pressing (Shift + F12) at the same time.
  • (Ctrl + Shift + F12) pressing simultaneously prints a document in Microsoft Word.
  • You can preview a page in Microsoft Expression Web by pressing F12.
  • You also can open the browser debug tool or Firebug by F12.
  • F12 displays or hides the Dashboard with an Apple running Mac OS 10.4 or later.
  • You can access the list of bootable devices on your computer at startup using this key. It allows you to select a different device to boot from (Hard drive, USB drive, CD or DVD drive, Floppy drive, Network)

Fn key: FN key is usually positioned near the Ctrl key. Some keyboards have additional functions on the function keys; these functions can be activated by pressing the FN key. Depending on the type and brand of keyboard, the additional functions will differ.




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