AdBlock (Chrome)

AdBlock is a content filtering and ad blocking extension for the Google Chrome, Apple Safari (desktop and mobile), Firefox, Opera and Microsoft Edge web browsers. AdBlock allows users to prevent page elements, such as advertisements, from being displayed. It is free to download and use, and it includes optional donations 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. 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.

Gundlach launched a crowdfunding campaign on Crowdtilt in August 2013 in order to found an ad campaign to raise awareness of ad blocking and to rent a billboard at Times Square. After the one-month campaign, it raised $55,000.

AdBlock was sold to an anonymous buyer in 2015 and on October 15, 2015 Gundlach's name was taken down from the site. 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.

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.