Rated 5 out of 5 stars

This is a very useful extension. Specially I like the tumbnail preview. There is even a newer version already uploaded: https://addons.mozilla.org/de/firefox/downloads/file/65840/bettersearch-1.70-fx.xpi
With that new version, you can even request an update for a missing thumbnail.

This review is for a previous version of the add-on (1.70.1-signed.1-signed).