Mouseless Browsing is a Firefox add-on that can aid the user in all of the scenarios mentioned above. It can be used to speed up things in Firefox while using a keyboard and mouse or exclusively in situations where no mouse is at hand or where it is not practical to use a computer mouse.

The Firefox add-on concentrates on links and form elements. It will display a number next to each element. Pressing the number on the keyboard and hitting enter will perform the action. A link will be opened, a form element activated.

If that would have been all the extension would be nice but some users would not like it that much. One reason is that the IDs are always displayed and it can happen that IDs move elements on the page to another position. While that does not hurt the page’s functionality it reduces the visual experience of the user.

Another reason might be the [enter] key which has to be pressed before the action is activated. The options contain extensive means to customize the add-on. IDs can be hidden by default and activated with a shortcut [decimal]. The enter key can be removed from the keyboard shortcuts so that pressing the numbers will automatically perform the action.

IDs can be disabled for different types of elements and it is even possible to change the styles and define rules for specific websites.