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Updated Does µBlock blocks ads or just hide them? (markdown)

Raymond Hill 2015-02-19 12:22:52 -05:00
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Does-µBlock-blocks-ads-or-just-hide-them?.md

@ -14,18 +14,20 @@ There are two kinds of [ABP-compatible filters](https://adblockplus.org/en/filte
#### Network filters
The purpose of network filter is to prevent a network request to be made to a remote server, so as to prevent downloading a remote resource. µBlock will prevent the network request from even being made. This saves bandwidth, decrease privacy exposure -- as the remote server won't be able to log anything if you do not contact it.
**Short answer:** resources blocked: network requests are cancelled before they leave the browser.
The purpose of network filter is to prevent a network request to be made to a remote server, so as to prevent downloading a remote resource. µBlock will prevent the network request from even being made. This saves bandwidth, decrease privacy exposure -- as the remote server won't be able to log anything if you do not contact it.
#### Hosts file
µBlock also support the parsing and enforcing of hosts files -- something which ABP does not. All entries in a hosts file are parsed as network filters, i.e. no resource will be fetch from a remote server which appear in a hosts file, no connection will even be attempted.
**Short answer:** resources blocked: network requests are cancelled before they leave the browser.
µBlock also support the parsing and enforcing of hosts files -- something which ABP does not. All entries in a hosts file are parsed as network filters, i.e. no resource will be fetch from a remote server which appear in a hosts file, no connection will even be attempted.
#### Cosmetic filters
**Short answer:** resources hidden -- in various ways depending on the class of cosmetic filters.
These filters serve to remove DOM elements from a web page. They have no value privacy-wise, it is essentially to make web page look better by removing unwanted content, which usually cannot be blocked using network filters. Just like ABP, µBlock will hide DOM elements on a web page which match cosmetic filters. µBlock uses a [different method](https://github.com/gorhill/uBlock/wiki/Cosmetic-filtering-in-%C2%B5Block:-version-0.4.0.0-update) than other big-name blockers to hide the DOM elements though.
Different classes of cosmetic filters are applied differently:
@ -42,6 +44,4 @@ Different classes of cosmetic filters are applied differently:
- Firefox + uBlock: no flickering
- Firefox + ABP: no flickering
- Cached generic cosmetic filters: injected before page's root DOM is loaded
- No flickering
**Short answer:** resources hidden -- in various ways depending on the class of cosmetic filters.
- No flickering