Technology websites and user reviews for uBlock Origin have regarded the extension as less resource-intensive than extensions that provide similar feature sets such as Adblock Plus. The new feature was implemented in uBlock Origin 1.25, released on February 19, 2020. The uBlock Origin developer came up with a solution using a DNS API which is exclusive to Firefox 60+. Since the initial URL contained a sub-domain of the current page, it was interpreted by browsers as a first-party request and so was allowed by the filtering rules in uBlock Origin (and in similar extensions). These sites link to URLs that are sub-domains of the page's domain, but those sub-domains resolve to third-party hosts via a CNAME record. In November 2019, a uBlock Origin user reported a novel technique used by some sites to bypass third-party tracker blocking. CNAME-uncloaking third-party trackers in Firefox The Firefox version of uBlock Origin has an extra feature which helps to foil attempts by web sites to circumvent blockers. Site-specific switches to toggle the blocking of pop-ups, strict domain blocking, cosmetic filtering, blocking remote fonts, and JavaScript disabling were also added to uBlock Origin. Interface enhancements including a DOM inspector, privacy-oriented options to block link prefetching, hyperlink auditing, and IP address leaks via WebRTC (uBO-Extra is required to block WebRTC connections in Chromium).A mode to assist those with color vision deficiency.UBlock Origin includes a growing list of features not available in uBlock, including: Some additional features include dynamic filtering of scripts and iframes and a tool for webpage element hiding. Among the host files available, Peter Lowe's ad servers & tracking list and lists of malware domains are also enabled as default. The extensions are capable of importing hosts files and a number of community-maintained lists are available at installation. The popular filter lists EasyList and EasyPrivacy are enabled by default, along with the malware domain blocklist URLHaus. UBlock Origin supports the majority of Adblock Plus's filter syntax. The project specifically refuses donations and instead advises supporters to donate to maintainers of block lists. Īs of January 2021, the uBlock Origin Chrome extension had over 10 million active users and the Firefox version had 5 million active users. In April 2020, this fork was deprecated as Microsoft replaced Microsoft Edge Legacy with a Chromium-based Edge. On December 11, 2016, Nik Rolls released a fork of uBlock Origin for the Microsoft Edge browser (now known as Microsoft Edge Legacy).
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The extension was awarded "Pick of the Month" by Mozilla for May 2016. In January 2016, uBlock Origin was added to the repositories for Debian 9 and Ubuntu 16.04. The report attributed the growth to the desire of users for pure blockers outside the " acceptable advertising" program.
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Ī joint Sourcepoint and comScore survey reported an 833% growth rate over a ten-month tracking period ending in August 2015, the strongest growth among software listed. Raymond Hill, the founder and original author of uBlock, as of 2015 continued to work on the extension under the name uBlock Origin, sometimes stylized as uBlock 0, and abbreviated as uBO. UBlock Origin remains independent and does not allow ads for payment.
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In July 2018, was acquired by AdBlock and since February 2019 began allowing " Acceptable Ads", a program run by Adblock Plus that allows some ads which are deemed "acceptable", and for which the larger publishers pay a fee. In response, uBlock's founder Raymond Hill stated that "the donations sought by are not benefiting any of those who contributed most to create uBlock Origin." The development of uBlock stopped in August 2015 and it has been sporadically updated since January 2017. Aljoudi created to host and promote uBlock and to request donations. This version was later renamed uBlock Origin and it has been completely divorced from Aljoudi's uBlock. However Hill immediately self-forked it and continued the effort there. The uBlock project official repository was transferred to Chris Aljoudi by original developer Raymond Hill in April 2015, due to frustration of dealing with requests. First released in June 2014 as a Chrome and Opera extension, by winter 2015 the extension had expanded to other browsers.
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uBlock was developed by Raymond Hill to use community-maintained block lists, while adding features and raising the code quality to release standards. Development started by forking from the codebase of HTTP Switchboard along with another blocking extension called uMatrix, designed for advanced users. UBlock was initially named "μBlock" but the name was later changed to "uBlock" to avoid confusion as to how the Greek letter μ (Mu/Micro) in "μBlock" should be pronounced.
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2.2 CNAME-uncloaking third-party trackers in Firefox.