The Firefox version of uBlock Origin is considered the version that offers the best protection, as it supports protection against CNAME tracking, which the Chrome versions do not offer. To name a few improvements: blocking WebRTC from leaking IP addresses, removing elements permanently from webpages, blocking JavaScript by default, and addressing new tracking methods, such as CNAME tracking,

Hill improved the extension over the years, adding features and improvements to it on a regular basis. The extension was created after Hill left the uBlock project that he created. The uBlock Origin extension was first published on Mozilla's extensions store in April 2015 by its creator Raymond Hill, known as gorhill online. As far as the number of reviews is concerned: uBlock Origin received more than 13200 reviews, thousands more than Adblock Plus' 8500 reviews at the time of writing. The average rating is 4.8 out of 5 on the Mozilla add-ons store, while Adblock Plus has a rating of 4.5 out of 5. UBlock Origin beats Adblock Plus in other metrics as well.

Ublock origin addon