mirror of https://github.com/gorhill/uBlock.git
88 lines
5.5 KiB
Markdown
88 lines
5.5 KiB
Markdown
# µBlock for Chromium
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**Foreword:** Using a blocker is **NOT** [theft](https://twitter.com/LeaVerou/status/518154828166725632). Do not fall for this creepy idea. The _ultimate_ logical consequence of "blocking = theft" is the criminalisation of the inalienable right to privacy.
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See [releases page](https://github.com/gorhill/uBlock/releases) for recent changes.
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See [Wiki](https://github.com/gorhill/uBlock/wiki) for more information.
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An efficient blocker for Chromium-based browsers. Fast and lean. Written from scratch. Development
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through benchmarking.
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**µBlock is not an "ad blocker", it's a blocker in the broad sense**, which happens to block ads through its support of [Adblock Plus filter syntax](https://adblockplus.org/en/filters). µBlock [extends](https://github.com/gorhill/uBlock/wiki/Filter-syntax-extensions) the syntax.
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_EasyList_, _Peter Lowe's Adservers_ , _EasyPrivacy_ and _Fanboy's Social Block List_ are enabled by default when you install µBlock. Many more lists are readily available to protect yourself from trackers, analytics, data mining, and more ads. Hosts files are supported.
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Ads are just the visible portions of privacy-invading apparatus entering your browser when you visit most sites nowadays.
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My main goal with µBlock is to help users neutralize as much as can be privacy-invading apparatus (of which ads, "unintrusive" or not, are just the visible portion) for users who do not want to deal with more technical means like [µMatrix](https://github.com/gorhill/uMatrix).
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<p align="center">
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µBlock: on average, it <b>really</b> does make your browser run leaner<br>
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<img src="https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/mem-usage-overall-chart-20141224.png" /><br>
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<sup>Details of the benchmark available in <a href="https://github.com/gorhill/uBlock/blob/master/doc/benchmarks/mem-usage-overall-20141224.ods">this LibreOffice spreadsheet</a>.</sup>
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</p>
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[**Important note re memory usage**: there is currently a [bug in Chromium 39+ which causes a new memory leak each time the popup UI of an extension is opened](https://code.google.com/p/chromium/issues/detail?id=441500). This affects *all* extensions. Just so you are informed memory figures won't be too reliable as soon as you opened even only once the popup UI of an extension. (In all my benchmarks I of course avoided to do this).]
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<p align="center">
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µBlock: it is also easy on the CPU<br>
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<img src="https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/cpu-usage-overall-chart-20141226.png" /><br>
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<sup>This gives an idea of the CPU overhead added by extensions relative to each other.<br>Details of the benchmark available in <a href="https://github.com/gorhill/uBlock/blob/master/doc/benchmarks/cpu-usage-overall-20141226.ods">this LibreOffice spreadsheet</a>.</sup>
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</p>
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<p align="center">
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Being lean doesn't mean blocking less.<br>
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<img src="https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/privex-201409-30.png" /><br>
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<sup>For details of benchmark, see latest
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<a href="https://github.com/gorhill/uBlock/wiki/%C2%B5Block-and-others:-Blocking-ads,-trackers,-malwares">µBlock and others: Blocking ads, trackers, malwares</a>.
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</p>
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## Installation
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From the [Chrome store](https://chrome.google.com/webstore/detail/cjpalhdlnbpafiamejdnhcphjbkeiagm), the [Opera store](https://addons.opera.com/en-gb/extensions/details/ublock/), or [manually](https://github.com/gorhill/uBlock/tree/master/dist#install).
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To benefit from the higher efficiency, it is of course not advised to use an
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inefficient blocker at the same time. µBlock will do as well or better than the
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popular blockers out there.
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Also of interest: [About the required permissions](https://github.com/gorhill/uBlock/wiki/About-the-required-permissions).
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## Documentation
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I think it is pretty obvious, except for this I suppose:
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The big power button is to disable/enable µBlock **for the specific hostname
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which can be extracted from the URL address of the current page**. (It applies to
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the current web site only, it is **not** a global power button.) The state of the power
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switch for a specific site will be remembered.
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The right-hand screenshot shows optional [dynamic filtering](https://github.com/gorhill/uBlock/wiki/Dynamic-filtering) at work.
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## About
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µBlock is born out of [HTTP Switchboard](https://github.com/gorhill/httpswitchboard).
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All the niceties of HTTPSB have been removed, and what is left is a straightforward
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blocker which support EasyList and the likes, and also support host files.
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Cosmetic filters ("element hiding") are supported.
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There is nothing more to it. But it does what popular blockers out there do, at a
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fraction of CPU and memory usage for the same blocking power. Also, no unique user id
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and no home means no phoning home (some popular blockers do this, just be careful).
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Free. Open source. For users by users. No donations sought.
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Without the preset lists of filters, this extension is nothing. So if ever you
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really do want to contribute something, think about the people working hard
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to maintain the filter lists you are using, which were made available to use by
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all for free.
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You may contribute by helping to translate this project. I created an
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[entry on Crowdin](https://crowdin.net/project/ublock), where you may contribute
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to the translation work.
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## License
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[GPLv3](https://github.com/gorhill/uBlock/blob/master/LICENSE.txt).
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