Enable spelling check on Mozilla Firefox

Mozilla Firefox has a built-in spell-checker to automatically check what you are typing into web forms and text fields. You only need to install the add-on to enable the spelling-checker as below:

  1. Click Tools on the top menu bar of your Firefox.
  2. Click Add-on and install the dictionaries you need for spelling check.
  3. In any web form or text field, right-click and check the Spell Check.

Then you will be prompted by the browser when there is any spelling mistake.