How to enable spell check in Firefox text forms

This brief tutorial will show you how to enable spell check in web page forms (text input fields) in Firefox.

enable spell check in firefox forms

  1. Start by entering about:config in the Firefox address bar (without the http://)
  2. In the Filter: field, enter layout.spellcheck to bring up the layout.spellcheckDefault preference.

    enable spellcheck in firefox forms

  3. Double-click that entry and change the integer value from 1 to 2 and click OK.
  4. enable spell-check in firefox forms

  5. Open a new browser window or tab (or refresh an existing one) and test it out.
  6. enable spellcheck in firefox forms

{ 11 comments… add one }
  • cw September 13, 2007, 9:59 am

    This is great–thank you!
    Can anyone tell me how to delete words in the spellcheck dictionary that have been accidentally added?
    Awesome site–I visit every day.

  • Ross McKillop September 13, 2007, 10:14 am

    cw –

    Lifehacker has you covered –

    If you’re an OS X user, persdict.dat is in:

    /Library/Application Support/Firefox/Profiles/xxxxxxxx.default/persdict.dat

  • What is Firefox? November 9, 2007, 6:19 am

    If you don’t want to enable it globally, you can just right-click a text field and have Fx spellcheck it.

  • dinu June 20, 2008, 7:00 am

    Thanks a lot !!! It worked

  • Brook Chang-Morain October 3, 2009, 3:06 pm

    Thank you so much for the good advice!

  • Molly November 15, 2009, 1:52 pm

    It didn’t work!!!!!

  • Glenn Marsden August 11, 2010, 3:55 am

    Cracking link and useful explanation. I think this should be turned on by default.

    Thanks Ross

  • Amir September 24, 2010, 4:27 am

    It didn’t work for me

  • shivangi November 13, 2010, 11:04 am

    didnt work man.

  • schumi March 28, 2011, 5:17 am

    Did not work so i went to this page

    and installed the relevant dictionary and it worked

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