<sub><ahref="https://github.com/gorhill/uBlock/wiki/uBlock-Origin-is-completely-unrelated-to-the-web-site-ublock.org"><b>BEWARE!</b> uBO is (and has always been) COMPLETELY UNRELATED to the website <code>ublock.org</code></a>.</sub>
<ahref="https://addons.mozilla.org/addon/ublock-origin/"><imgsrc="https://user-images.githubusercontent.com/585534/107280546-7b9b2a00-6a26-11eb-8f9f-f95932f4bfec.png"alt="Get uBlock Origin for Firefox"></a>
<ahref="https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak"><imgsrc="https://user-images.githubusercontent.com/585534/107280673-a5ece780-6a26-11eb-9cc7-9fa9f9f81180.png"alt="Get uBlock Origin for Microsoft Edge"></a>
<ahref="https://addons.opera.com/extensions/details/ublock/"><imgsrc="https://user-images.githubusercontent.com/585534/107280692-ac7b5f00-6a26-11eb-85c7-088926504452.png"alt="Get uBlock Origin for Opera"></a>
<ahref="https://addons.thunderbird.net/thunderbird/addon/ublock-origin/"><imgsrc="https://user-images.githubusercontent.com/124740436/235314672-73243149-3683-4407-a2d5-ad0f2b08bc17.png"alt="Get uBlock Origin for Thunderbird"></a>
<ahref="https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm"><imgsrc="https://user-images.githubusercontent.com/585534/107280622-91a8ea80-6a26-11eb-8d07-77c548b28665.png"alt="Get uBlock Origin for Chromium"></a><br>
<sub><ahref="https://github.com/uBlockOrigin/uBlock-issues/wiki/About-Google-Chrome's-%22This-extension-may-soon-no-longer-be-supported%22"><b>IMPORTANT</b>: About Google Chrome's "This extension may soon no longer be supported"</a></sub>
uBlock Origin (uBO) is a CPU and memory-efficient [wide-spectrum content blocker][Blocking] for Chromium and Firefox. It blocks ads, trackers, coin miners, popups, annoying anti-blockers, malware sites, etc., by default using [EasyList][EasyList], [EasyPrivacy][EasyPrivacy], [Peter Lowe's Blocklist][Peter Lowe's Blocklist], [Online Malicious URL Blocklist][Malicious Blocklist], and uBO [filter lists][uBO Filters]. There are many other lists available to block even more. Hosts files are also supported. uBO uses the EasyList filter syntax and [extends][Extended Syntax] the syntax to work with custom rules and filters.
You may easily unselect any preselected filter lists if you think uBO blocks too much. For reference, Adblock Plus installs with only EasyList, ABP filters, and Acceptable Ads enabled by default.
It is important to note that using a blocker is **NOT** [theft]. Do not fall for this creepy idea. The _ultimate_ logical consequence of `blocking = theft` is the criminalization of the inalienable right to privacy.
Ads, "unintrusive" or not, are just the visible portion of the privacy-invading means entering your browser when you visit most sites. **uBO's primary goal is to help users neutralize these privacy-invading methods** in a way that welcomes those users who do not wish to use more technical means.
<td>The <ahref="https://github.com/gorhill/uBlock/wiki/Quick-guide:-popup-user-interface">simple popup user interface</a> for an install-it-and-forget-it type of installation that is configured optimally by default.</td>
<td>The <ahref="https://github.com/gorhill/uBlock/wiki/Dynamic-filtering:-quick-guide">advanced popup user interface</a> includes a point-and-click firewall that is configurable on a per-site basis.</td>
Do **NOT** use uBO with any other content blocker. uBO [performs][Performance] as well as or better than most popular blockers. Other blockers can prevent uBO's privacy or anti-blocker-defusing features from working correctly.
If you ever want to contribute something, think about the people working hard to maintain the filter lists you are using, which are available to use by all for free.
