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Manual update of one or more lists will cause the most recent version of these lists to be fetched from the "origin" server, and since the lists from "origin" servers cannot be updated through differential update, the lists will be subsequently updated according to their `Expires` directive. When the lists are auto-updated, the "CDN" servers will be used, and as a result the lists will start to be updated trhough differential updates every 6-hour (currently). Thus it is recommended and optimal to let the lists auto-update, since you will benefit from a much shorter delay to get up-to-date lists (i.e. every 6-hour instead of every 6-day). You can force the auto-updater to fetch all the lists by clicking "Purge all caches", then restart uBO without clicking "Update". This will cause uBO to perform an emergency auto-update at restart time, after which you will have all the lists which are candidates for differential update. The "Update now" button in the "Support" pane will also cause lists to be fetched from their "origin" server. |
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| CONTRIBUTING.md | ||
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| REMOVED.md | ||
uBlock Origin (uBO)
BEWARE! uBO is (and has always been) COMPLETELY UNRELATED to the website ublock.org.
uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker for Chromium and Firefox. It blocks ads, trackers, coin miners, popups, annoying anti-blockers, malware sites, etc., by default using EasyList, EasyPrivacy, Peter Lowe's Blocklist, Online Malicious URL Blocklist, and uBO filter lists. There are many other lists available to block even more. Hosts files are also supported. uBO uses the EasyList filter syntax and extends 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.
Documentation
| Basic Mode | Advanced Mode |
|---|---|
| The simple popup user interface for an install-it-and-forget-it type of installation that is configured optimally by default. | The advanced popup user interface includes a point-and-click firewall that is configurable on a per-site basis. |
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Visit the Wiki for documentation.
For support, questions, or help, visit /r/uBlockOrigin.
Installation
Firefox
uBO works best on Firefox and is available for desktop and Android versions.
Thunderbird
In Thunderbird, uBlock Origin does not affect emails, just feeds.
Chromium
Microsoft Edge Add-ons (Published by: Nicole Rolls)
uBO should be compatible with any Chromium-based browser.
All Programs
Do NOT use uBO with any other content blocker. uBO performs as well as or better than most popular blockers. Other blockers can prevent uBO's privacy or anti-blocker-defusing features from working correctly.
Enterprise Deployment
Release History
Translations
Help translate uBO via Crowdin.
About
Free. Open-source. For users by users. No donations sought.
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.