{"id":19808,"date":"2020-01-28T13:02:09","date_gmt":"2020-01-28T13:02:09","guid":{"rendered":"https:\/\/www.arimetrics.com\/glosario-digital\/ad-blocker"},"modified":"2026-09-14T10:33:19","modified_gmt":"2026-09-14T10:33:19","slug":"ad-blocker","status":"publish","type":"encyclopedia","link":"https:\/\/www.arimetrics.com\/en\/digital-glossary\/ad-blocker","title":{"rendered":"Ad Blocker"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Ad Blocker\" class=\"boxpad alignright wp-image-13821 size-full\" height=\"300\" src=\"https:\/\/www.arimetrics.com\/wp-content\/uploads\/2020\/01\/ad-blocker.jpg\" style=\"margin-top:0;\" width=\"300\" srcset=\"https:\/\/www.arimetrics.com\/wp-content\/uploads\/2020\/01\/ad-blocker.jpg 300w, https:\/\/www.arimetrics.com\/wp-content\/uploads\/2020\/01\/ad-blocker-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><strong>Definition:<\/strong><\/p>\n<p>An <strong>ad blocker<\/strong> is a tool that prevents certain advertising elements from loading or being displayed while browsing the internet. It can act on banners, pop-ups, video ads and other formats, depending on its rules and capabilities.<\/p>\n<p>Its use can reduce interruptions to the <a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/ux\">user experience<\/a>, but it also affects websites that earn revenue from advertising. The scope of blocking depends on the tool, its configuration and how ads are served.<\/p>\n\n<h2>How Ad Blockers Work<\/h2>\n<p>Ad blockers typically use filter lists with rules that identify network requests or page elements associated with advertising. They can prevent a resource from being downloaded or hide an element so that it does not appear on screen.<\/p>\n<p>These are different operations: hiding an ad does not necessarily mean that its download was prevented. Some tools also block tracking requests, although ad blocking and protection against tracking are not identical functions.<\/p>\n<p>Lists can include exceptions. For example, a tool may allow certain ads or disable filtering on websites selected by the user. Installing an ad blocker therefore does not mean that all advertising will disappear.<\/p>\n<p>Filters can also mistakenly affect legitimate functions, such as players, forms or buttons. Their effectiveness depends on rule updates and the capabilities of the browser or system in which they operate.<\/p>\n<h2>Reasons to use an Ad Blocker<\/h2>\n<p>People may block ads to reduce interruptions, avoid formats that make reading difficult or limit data consumption. Examples include pop-ups, ads that cover content and automatic video or audio playback.<\/p>\n<p>Privacy and security may also influence this decision. Blocking certain requests can reduce some tracking mechanisms or exposure to malicious advertising, but it does not guarantee anonymity or replace other security measures.<\/p>\n<p>On the other hand, advertising funds some of the content and services available on the internet. Blocking it can reduce the number of ads displayed and the associated revenue.<\/p>\n<p>Some websites ask users to allow their advertising, offer an ad-free subscription or make access to content conditional. These responses reflect different ways of balancing website funding and user preferences.<\/p>\n<h2>Types of Ad Blockers<\/h2>\n<p>Ad blockers can be distinguished by where they apply filtering:<\/p>\n<ul>\n<li><strong>Browser extensions:<\/strong> tools such as Adblock Plus apply rules within a compatible browser. Their behaviour depends on active lists, exceptions and available permissions.<\/li>\n<li><strong>Built-in browser features:<\/strong> browsers such as Opera include blocking options without requiring a separate extension.<\/li>\n<li><strong>Filtering applications and proxies:<\/strong> solutions such as Privoxy process traffic configured to pass through them. Their scope depends on the protocols and connections they can examine.<\/li>\n<li><strong>DNS-based blocking:<\/strong> prevents certain domains used to serve advertising or tracking from resolving. It does not distinguish individual elements hosted on the same domain, so its capabilities differ from those of an extension.<\/li>\n<\/ul>\n<p>Deleting cookies can affect personalisation or tracking, but does not remove ads by itself. Likewise, using HTTPS protects the connection; it does not block advertising.<\/p>\n<h2>Who uses Ad Blockers?<\/h2>\n<p>There is no single profile that describes everyone who uses ad blockers. Age, device, country and browsing habits may influence usage, but any demographic description should be based on a specific study and its date.<\/p>\n<p>It is also useful to distinguish between having an ad blocker installed, keeping it active and using it only on certain websites. These situations do not represent the same behaviour or allow adoption figures to be interpreted in the same way.<\/p>\n<p>For <a href=\"https:\/\/www.arimetrics.com\/en\/digital-marketing-agency-spain\">digital marketing<\/a>, message relevance is only one part of the advertising experience. Format, frequency, resource consumption and data handling also play a role. Personalising an ad does not guarantee its acceptance or prevent a filter from blocking it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Definition: An ad blocker is a tool that prevents certain advertising elements from loading or being displayed while browsing the internet. It can act on banners, pop-ups, video ads and other formats, depending on its rules and capabilities. Its use can reduce interruptions to the user experience, but it also affects websites that earn revenue [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","encyclopedia-tag":[1234],"class_list":["post-19808","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-tag-display-formats"],"_links":{"self":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia\/19808","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/types\/encyclopedia"}],"author":[{"embeddable":true,"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/users\/6"}],"wp:attachment":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/media?parent=19808"}],"wp:term":[{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=19808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}