uBlock Origin addon for browsers

I recently switched to an older notebook and my Chrome and Firefox browsers were quite slow on it. Using the Task Manager in Chrome I noticed that one of the main culprits was AdBlock Plus which was hogging memory.

Searching for a leaner alternative to ABP I switched to uBlock Origin. (Confusingly, there is also a uBlock addon, which is a fork of this.) Just install the addon and you are set! It uses many lists that are maintained online and the blocking is automatic. If you need to turn off blocking or change a configuration just click its button in the toolbar.

I clearly noticed a 50% or more reduction in memory usage with uBlock Origin compared to ABP. The improvement in actual usage was also clear.

Popup UI

This is the UI dialog that pops up when the uBO button in the toolbar is clicked.

• The More ⮟ and Less ⮝ buttons can be clicked multiple times to successively reveal or hide more functionality.
• Click the power ⏻ button to toggle uBO for current site whose domain is shown below it. When the power button is off, it means uBO is not blocking anything for the site. This setting is in effect for just this browser session and uBO reverts back in a new browser session. To make this permanent, go to My rules and Commit the rule. You can also customize the setting for specific TLD, domain, webpage or URL pattern in My rules section.
• Per-site settings are no popups, no large media elements, no cosmetic filtering, no remote fonts and no Javascript. These are can be toggled for current site from the UI or customized in My rules.

Reference

• Complete Wiki Guide

Tried with: uBlock Origin 1.1.1, Firefox 41 and Ubuntu 15.04