Any extensions that Firefox installs on its own are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Then cast a critical eye over the list on the right side. In the left column of the Add-ons page, click Extensions. type or paste about:addons in the address bar and press Enter/Return.'3-bar' menu button (or Tools menu) > Add-ons.You can view, disable, and often configure or remove extensions on the Add-ons page. Some of these provide toolbar buttons to manage blocked content in a page. (2) Content blocking extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix. (1) Built-in Tracking Protection feature (especially in private windows).ĭo you see a shield icon toward the left end of the toolbar when this problem hits? More info on how to use the shield to manage blocking: What happened to Tracking Protection?.

But that's not the only possible explanation. Sometimes performance is even better with uBlock than without a blocker.Any time content is blocked, sites may accuse you of using an ad blocker. This window also reports on the percentage of blocks and the total number of blocks since you installed the extension.Įvidence published by the author of the extension, shows that uBlock helps Chrome and Firefox use less memory and processor power than other ad blockers such as AdGuard, AdBlock or ABP.

To turn uBlock on or off, all you need to do is click on the button and press the 'off' button on the window that pops up. If uBlock is activated for the site you're visiting, the icon will go from gray to bright red, and a number will appear on the icon if annoying elements are found and blocked. Simply install uBlock and you'll see a new icon on your browser's button bar.

In most cases, going to these screens isn't required:uBlock works at full capacity as soon as you install it. In uBlock options, you can turn blacklists on or off, modify the white list of permitted sites and set up filters. The number of blocked elements is shown on the uBlock icon. To block ads, cookies and other elements of questionable use, uBlock uses several public blacklists, such as EasyList, Spam404 and Peter Lowe's famous list, but it also allows you to filter and create custom rules.

Adblocker mozilla firefox