AdBlock is an

ad blocking Ad blocking or ad filtering is a software capability for blocking or altering online advertising in a web browser, an application or a network. This may be done using browser extensions or other methods. Technologies and native countermeasures ...

browser extension for Google Chrome,

Apple Safari Safari is a web browser developed by Apple. It is built into macOS, iOS, and iPadOS, and uses Apple's open-source browser engine, WebKit, which was derived from KHTML. Safari was introduced in Mac OS X Panther in January 2003. It was inclu ...

(desktop and mobile),

Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current ...

Opera Opera is a form of theatre in which music is a fundamental component and dramatic roles are taken by singers. Such a "work" (the literal translation of the Italian word "opera") is typically a collaboration between a composer and a libr ...

, and

Microsoft Edge Microsoft Edge is a proprietary, cross-platform web browser created by Microsoft. It was first released in 2015 as part of Windows 10 and Xbox One and later ported to other platforms as a fork of Google's Chromium open-source project: Android ...

. AdBlock allows users to prevent page elements, such as

advertisements Advertising is the practice and techniques employed to bring attention to a product or service. Advertising aims to put a product or service in the spotlight in hopes of drawing it attention from consumers. It is typically used to promote a ...

, from being displayed. It is free to download and use, and it includes optional

donations A donation is a gift for charity, humanitarian aid, or to benefit a cause. A donation may take various forms, including money, alms, services, or goods such as clothing, toys, food, or vehicles. A donation may satisfy medical needs such as b ...

to the developers. The AdBlock extension was created on December 8, 2009, which is the day that support for extensions was added to Google Chrome. AdBlock's efforts are not related to

Adblock Plus Adblock Plus (ABP) is a free and open-source browser extension for content-filtering and ad blocking. It is developed by developer Wladimir Palant's Eyeo GmbH, a German software company. The extension has been released for Mozilla Firefox (inc ...

. The developer of AdBlock, Michael Gundlach, claims to have been inspired by the Adblock Plus extension for Firefox, which is itself based on the original Adblock that ceased development in 2004. Since 2016, AdBlock has been based on the Adblock Plus source code. In July 2018, AdBlock acquired

uBlock uBlock Origin (; "" ) is a free and open-source browser extension for content filtering, including ad blocking. The extension is available for Chrome, Chromium, Edge, Firefox, Opera, Pale Moon, as well as versions of Safari prior to 13. uBloc ...

, a commercial ad-blocker owned by uBlock LLC and based on

uBlock Origin uBlock Origin (; "" ) is a free and open-source browser extension for content filtering, including ad blocking. The extension is available for Chrome, Chromium, Edge, Firefox, Opera, Pale Moon, as well as versions of Safari prior to 13 ...

Crowdfunding

Gundlach launched a crowdfunding campaign on Crowdtilt in August 2013 in order to fund an ad campaign to raise awareness of ad-blocking and to rent a billboard at

Times Square Times Square is a major commercial intersection, tourist destination, entertainment hub, and neighborhood in Midtown Manhattan, New York City. It is formed by the junction of Broadway, Seventh Avenue, and 42nd Street. Together with adjacent ...

. After the one-month campaign, it raised $55,000.

Sales and acceptable ads

AdBlock was sold to an anonymous buyer in 2015 and on October 15, 2015 Gundlach's name was taken down from the site.Williams, Owen
"Adblock extension sells to mystery buyer,"
thenextweb.com. Retrieved 2015-10-02 In the terms of the deal, the original developer Michael Gundlach left operations to Adblock's continuing director, Gabriel Cubbage, and as of October 2, 2015, AdBlock began participating in the Acceptable Ads program. Acceptable Ads identifies "non-annoying" ads, which AdBlock shows by default. The intent is to allow non-invasive advertising, to either maintain support for websites that rely on advertising as a main source of revenue or for websites that have an agreement with the program.

Filters

AdBlock uses the same filter syntax as Adblock Plus for Firefox and natively supports Adblock Plus filter subscriptions. Filter subscriptions can be added from a list of recommendations in the "Filter Lists" tab of the AdBlock options page, or by clicking on an Adblock Plus auto-subscribe link.

Partnership with Amnesty International

On March 12, 2016, in support of

World Day Against Cyber Censorship World Day Against Cyber Censorship is an online event held each year on March 12 to draw attention to the ways that governments around the world are deterring and censoring free speech online. The day was first observed on 12 March 2008 at the r ...

, and in partnership with Amnesty International, instead of blocking ads, AdBlock replaced ads with banners linked to articles on Amnesty's website, written by prominent free speech advocates such as Edward Snowden, to raise awareness of government-imposed online censorship and digital privacy issues around the world. The campaign was met with both praise and criticism, with AdBlock's CEO, Gabriel Cubbage, defending the decision in an essay on AdBlock's website, saying "We’re showing you Amnesty banners, just for today, because we believe users should be part of the conversation about online privacy. Tomorrow, those spaces will be vacant again. But take a moment to consider that in an increasingly information-driven world, when your right to digital privacy is threatened, so is your right to free expression." Meanwhile, Simon Sharwood of The Register characterized Cubbage's position as "'You should control your computer except when we feel political', says AdBlock CEO".

AdBlock for Firefox

On September 13, 2014, the AdBlock team released a version for Firefox users, ported from the code for Google Chrome, released under the same

free software Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, no ...

license as the original Adblock. The extension was removed on April 2, 2015, by an administrator on

Mozilla Add-ons Add-on is the Mozilla term for software modules that can be added to the Firefox web browser and related applications. Mozilla hosts them on its official add-on website. Browser extensions are the primary type of add-on. In 2017, Mozilla enacted ...

. The official site's knowledge base article on December 7, 2015, states that with version 44 or higher of Firefox desktop and Firefox Mobile, AdBlock will not be supported. The last version of Adblock for those platforms will work on older versions of Firefox. AdBlock was released again on

on November 17, 2016.

CatBlock

On April 1, 2012, Adblock developer Michael Gundlach tweaked the code to display ''LOLcats'' instead of simply blocking ads. Initially developed as a short-lived

April Fools April Fools' Day or All Fools' Day is an annual custom on 1 April consisting of practical jokes and hoaxes. Jokesters often expose their actions by shouting "April Fools!" at the recipient. Mass media can be involved in these pranks, which may b ...

joke, the response was so positive that ''CatBlock'' was continued to be offered as an optional add-on supported by a monthly subscription. On October 23, 2014, the developer decided to end official support for CatBlock, and made it open-source, under GPLv3 licensing, as the original extension.

References

External links

* {{Official website 2009 software Ad blocking software Advertising-free media Crowdfunded projects Free Firefox WebExtensions Freeware Google Chrome extensions IOS software Microsoft Edge extensions Mobile applications Online advertising Opera Software Software add-ons 2018 mergers and acquisitions