mirror of https://github.com/gorhill/uBlock.git
URL updates, Grammar / rewording fixes
q1800
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@ -1,21 +1,21 @@
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Motivation for creating this page, this comment made in the spirit of _Fake News_ (i.e. with no supporting objective evidences, merely a _"just trust me"_ statement):
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Motivation for creating this page, this comment made in the spirit of _Fake News_ (with no supporting objective evidence, merely just a _"trust me"_ statement):
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> Ublock is inferior in capabilities [to Adblock Plus (ABP)] as a result of being lighter on the browser [[source](http://forums.mozillazine.org/viewtopic.php?p=14743232#p14743232)]
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> Ublock is inferior in capabilities [to Adblock Plus (ABP)] as a result of being lighter on the browser [[source](https://forums.mozillazine.org/viewtopic.php?p=14743232#p14743232)]
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There is nothing wrong with preferring ABP to uBlock Origin (uBO). There is however something wrong when someone engages in misinformation regarding uBO because of their preference for ABP.
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There is nothing wrong with preferring ABP to uBlock Origin (uBO). There is, however, something wrong when someone engages in misinformation regarding uBO because of their preference for ABP.
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This is my reference answer to such claims.
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Here is my reference answer to such claims.
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uBO is lighter on the browser because of many choices which were made regarding how the filtering engine is designed internally. A coarse enumeration of these choices are:
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uBO is lighter on the browser because of the many choices made regarding the internal design of the filtering engine. A coarse enumeration of these choices is:
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- lean in-memory filter representation
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- plain string comparisons instead of regular expressions wherever possible
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- a majority of network filters can be reduced to plain string comparison, and this is what uBO does internally for these filters, whereas ABP converts _all_ network filters into regular expressions.
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- a majority of network filters can reduce to basic string comparison, and is what uBO does internally for these filters, whereas ABP converts _all_ network filters into regular expressions.
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- Example, `&ad_zones=` (filter found in EasyList).
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- ABP's code conceptually is: `/&ad_zones=/.test(url)` -- the whole URL must be scanned
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- uBO's code conceptually is: `url.startsWith('&ad_zones=', i)` -- no scanning of the URL
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- does not unconditionally inject 18,000+ (that is with EasyList only) generic CSS rules in all pages/frames<br><sup>meaning no undue [memory usage issues](https://bugzilla.mozilla.org/show_bug.cgi?id=1320872)</sup>
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Do these design choices really cause uBO to be _"inferior in capabilities"_ compared to ABP? See the capabilities comparison grid below for an answer (at time of writing):
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Do these design choices cause uBO to be _"inferior in capabilities"_ compared to ABP? See the capabilities comparison grid below for an answer (at the time of writing):
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Features | ABP | uBO
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-------- | :---: | :---:
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@ -26,9 +26,9 @@ can read hosts files | | yes
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CNAME uncloaking | | [yes](./Static-filter-syntax#cname)
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`denyallow` | | [yes](./Static-filter-syntax#denyallow)
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`domain` with entity-matching | | [yes](./Static-filter-syntax#domain)
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`inline-script`<br><sup>to prevent execution of inline javascript</sup> | [no](https://issues.adblockplus.org/ticket/748) | [yes](./Static-filter-syntax#inline-script)
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`inline-script`<br><sup>to prevent execution of inline javascript</sup> | [no](https://issues.adblockplus.org/ticket/748/) | [yes](./Static-filter-syntax#inline-script)
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`important`<br><sup>to be able to override exception filters</sup> | | [yes](./Static-filter-syntax#important)
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`popunder` | [no](https://issues.adblockplus.org/ticket/2095) | yes
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`popunder` | [no](https://issues.adblockplus.org/ticket/2095/) | yes
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`redirect`<br><sup>to redirect to local resources, key to privacy and to counter anti-blockers</sup> | | yes
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`csp=`<br><sup>see [rationale](https://github.com/gorhill/uBlock/issues/1930#issuecomment-301055346)</sup> | | yes
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`badfilter`<br><sup>to disable an existing filter</sup> | | yes
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@ -38,18 +38,18 @@ behind-the-scene<br><sup>uBO's logger reports behind-the-scene request, filterin
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**cosmetic filtering**
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entity-based filters | | [yes](./Static-filter-syntax#entity-based-cosmetic-filters)
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`-abp-properties` | yes | [no](https://github.com/gorhill/uBlock/issues/139)
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`:has` | ~~[not yet](https://issues.adblockplus.org/ticket/2360)~~ yes (`:-abp-has`) | yes
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`:has-text` | [yes](https://issues.adblockplus.org/ticket/5249) (`-abp-contains`) | yes
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`:has` | ~~[not yet](https://issues.adblockplus.org/ticket/2360/)~~ yes (`:-abp-has`) | yes
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`:has-text` | [yes](https://issues.adblockplus.org/ticket/5249/) (`-abp-contains`) | yes
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`:if` `:if-not`<br>`:matches-css` `:matches-css-before` `:matches-css-after`<br>`:xpath` | | yes
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`:remove` | | yes
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`:style` | [no](https://issues.adblockplus.org/ticket/756) | yes
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`:style` | [no](https://issues.adblockplus.org/ticket/756/) | yes
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`:upward` | | yes
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**Scriptlet filtering**
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`+js(...)`<br>Ability to inject scriptlets in page content<br><sup>key to counter anti-blockers</sup> | | [yes](./Static-filter-syntax#scriptlet-injection)
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**HTML filtering**
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Ability to modify response data on the fly<br><sup>WebExtensions uBO 1.15+</sup> | | [yes](./Static-filter-syntax#html-filters)
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**privacy**
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pro-user default settings<br><sup>uBO is not monetized, it's under no pressure to [compromise](https://adblockplus.org/forum/viewtopic.php?f=17&t=50215) on pro-user interests</sup> | | yes
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pro-user default settings<br><sup>uBO is not monetized, it's under no pressure to [compromise](https://forum.adblockplus.org/viewtopic.php?f=17&t=50215) on pro-user interests</sup> | | yes
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disable pre-fetching | | [yes](./Dashboard:-Settings#disable-pre-fetching)
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disable hyperlink auditing | | [yes](./Dashboard:-Settings#disable-hyperlink-auditing)
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disable local IP addresses leakage through WebRTC | | [yes](./Dashboard:-Settings#prevent-webrtc-from-leaking-local-ip-address)
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@ -58,7 +58,7 @@ block CSP reports | | [yes](./Dashboard:-Settings#block-csp-reports)
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pre-compilation of filter lists for fast loading of filters | | [yes](./Launch-and-filter-lists-load-performance)
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"acceptable ads" | yes | [no](https://github.com/gorhill/uBlock/blob/master/MANIFESTO.md)
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disable everywhere | yes |
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count filter hits | yes, [disabled by default](https://issues.adblockplus.org/ticket/5298) | [no](https://github.com/gorhill/uBlock/issues/1353)
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count filter hits | yes, [disabled by default](https://issues.adblockplus.org/ticket/5298/) | [no](https://github.com/gorhill/uBlock/issues/1353)
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ability to globally ignore generic cosmetic filters<br><sup>useful for low-performance mobile devices</sup> | | yes
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cloud storage | Firefox only | yes
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point-and-click firewall-like filtering<br><sup>allows for [relax](./Blocking-mode:-medium-mode) or [strict](./Blocking-mode:-hard-mode) default-deny approach</up> | | yes
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