This should be built into Firefox Rated 5 out of 5 stars
This is a must have addon for anyone with less than perfect eyesight. For those of us with poor eyesight it has been a Godsend. Sadly, with Firefox 55 it has been rendered completely inoperable despite the Version 56 tag it carries. Hoping it can be updated to WE but fearing that it's not even possible. Many thanks for the years this addon has made my browsing possible.This review is for a previous version of the add-on (54.0).