Without the preset lists of filters, this extension is nothing. Yet, even after adding Fanboy's two extra lists, hpHosts’s Ad and tracking servers, uBlock still has a lower memory footprint than other very popular blockers out there.Īlso, be aware that selecting some of these extra lists may lead to higher likelihood of web site breakage - especially those lists which are normally used as hosts file. Of course, the more filters enabled, the higher the memory footprint. More lists are available for you to select if you wish:

Out of the box, these lists of filters are loaded and enforced: It applies to the current web site only, it is not a global power button.įlexible, it's more than an 'ad blocker': it can also read and create filters from hosts files. Usage: The big power button in the popup is to permanently disable/enable uBlock for the current web site. An efficient blocker: easy on memory and CPU footprint, and yet can load and enforce thousands more filters than other popular blockers out there.

Ublock origin android edge