About this extension

uBlock Origin is not an "ad blocker", it's a wide-spectrum content blocker with CPU and memory efficiency as a primary feature.

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Out of the box, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default:

- EasyList (ads)
- EasyPrivacy (tracking)
- Peter Lowe’s Ad server list (ads and tracking)
- Online Malicious URL Blocklist
- uBO's own lists

More lists are available for you to select if you wish:

- EasyList Cookie
- Fanboy Annoyances
- AdGuard Annoyances
- Dan Pollock’s hosts file
- And many others

Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features.

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Free.
Open source with public license (GPLv3)
For users by users.

If ever you really do want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free.

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Release notes for 1.63.0

See complete release notes for <a href="https://github.com/gorhill/uBlock/releases/tag/1.63.0">1.63.0</a>.

<b>Fixes / changes</b>

<ul>
<li><a href="https://github.com/gorhill/uBlock/commit/d36ea89a02">Improve <code>prevent-set[Timeout|Interval]</code> scriptlets</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/4aebdbb0a9">Add quit button to element zapper mode</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/9e946ce0c3">Improve <code>trusted-override-element-method</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/34cea70924">Disable obsolete cache-control workaround for Firefox</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/fc231998b9">Improve <code>overlay-buster</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/a483f7955f">Add ability to inject scriptlets according to origin of ancestor contexts</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/e636c32f2a">Fix range parser in prevent-setTimeout scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/34df044808">Add filter option synonyms for <code>strict1p</code>/<code>strict3p</code></a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/36404543e4">Increase URL buffer size to 8192 (from 2048)</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/ea8853cda3">Use onmessage/postMessage instead of BroadcastChannel in diff updater</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/d41989e62a">Improve <code>disable-newtab-links</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/9c26a07b53">Improve <code>prevent-addEventListener</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/5921e50e03">Fix reverse lookup of <code>##^responseheader(...)</code> filters</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/9bb1a2baaf">Improve <code>evaldata-prune</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/344539d793">Comply with Mozilla's "User Consent and Control"</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/0df7faffac">Improve <code>noeval-if</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/35a47d674b">Add "closed","next", "mandatory", "agree/disagree" values to <code>set-cookie</code> scriptlet</a> (by @ryanbr)</li>
<li><a href="https://github.com/gorhill/uBlock/commit/4b12247da1">Add <code>decline</code> value to <code>set-cookie</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/b617926c1c">Improve <code>abort-on-stack-trace</code> scriptlet</a></li>
<li><a href="https://github.com/gorhill/uBlock/commit/551c6bc6eb">Improve <code>href-sanitizer</code> scriptlet</a></li>
</ul>

<a href="https://github.com/gorhill/uBlock/compare/1.62.0...1.63.0">Commits history since last version</a>

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