Is it possible to remove the empty fields on all my password entries? Sometimes auto generated entries include information from the web form I don't care to keep, like tickboxes and such.

I've gone through and deleted the information but all the boxes are still there on each entry making editing it in the future frustrating as I have to scroll down the list to find the username/password fields to edit.

Yes, it is possible. Edit your entry and then click on the field name on the left of the field you want to delete and a popup will appear where there is a delete button which you can click to delete the field.

Hope this helps.