{"id":21361,"date":"2020-01-28T15:55:14","date_gmt":"2020-01-28T15:55:14","guid":{"rendered":"https:\/\/www.arimetrics.com\/glosario-digital\/pixel"},"modified":"2026-09-16T16:48:01","modified_gmt":"2026-09-16T16:48:01","slug":"pixel","status":"publish","type":"encyclopedia","link":"https:\/\/www.arimetrics.com\/en\/digital-glossary\/pixel","title":{"rendered":"Pixel"},"content":{"rendered":"<p><img decoding=\"async\" class=\"boxpad alignright wp-image-14762 size-full\" src=\"https:\/\/www.arimetrics.com\/wp-content\/uploads\/2020\/01\/pixel-1.png\" alt=\"Pixel\" width=\"300\" height=\"300\" style=\"margin-top:0;\" srcset=\"https:\/\/www.arimetrics.com\/wp-content\/uploads\/2020\/01\/pixel-1.png 300w, https:\/\/www.arimetrics.com\/wp-content\/uploads\/2020\/01\/pixel-1-150x150.png 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><strong>Definition:<\/strong><\/p>\n<p>A <strong>tracking pixel<\/strong> is a resource used to record a page load or an action performed on a website. Traditionally, it could be a transparent one-pixel image requested from a server; in current usage, the term is also applied to tags and code snippets that send events to an analytics or advertising platform.<\/p>\n<p>Depending on its configuration, it may communicate data such as the page visited, the time of the request, the browser type, the referrer or identifiers associated with a campaign. It may also record actions defined with <a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/javascript\">JavaScript<\/a>, such as a form submission or purchase. Its use must comply with applicable permissions, consent requirements and data protection rules.<\/p>\n<p>These pixels are used to measure campaign performance, attribute conversions and create audiences based on observed actions. The information available depends on the implementation, browser settings and privacy restrictions; installing a pixel does not by itself guarantee complete measurement.<\/p>\n\n<h2>Types of pixels<\/h2>\n<p>Depending on the measurement objective, pixels are mainly used for remarketing and conversion tracking:<\/p>\n<p><strong>Remarketing pixels:<\/strong> record visits or actions to build audiences that may later be used in <a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/remarketing\">remarketing<\/a> campaigns. Whether a person is included in an audience depends on the configured rules and on having a valid basis for processing the data.<\/p>\n<p><strong>Conversion pixels:<\/strong> record actions considered valuable, such as a purchase, registration or contact request. They can connect these events with an <a href=\"https:\/\/www.arimetrics.com\/en\/google-ads-agency-spain\">advertising campaign<\/a> when the platform has the information needed to attribute them.<\/p>\n<h2>What are the most common pixels?<\/h2>\n<p>Platforms use different names, and not all of them call their technology a pixel. Well-known advertising tags include:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.facebook.com\/business\/help\/952192354843755\" target=\"_blank\" rel=\"noopener\">Meta Pixel<\/a>, formerly called Facebook Pixel.<\/li>\n<li><a href=\"https:\/\/support.google.com\/google-ads\/answer\/7548399?hl=en\" target=\"_blank\" rel=\"noopener\">Google tag<\/a>, the current name of the tag used by Google Ads for conversion measurement.<\/li>\n<li><a href=\"https:\/\/www.adroll.com\/pixel-set-up\" target=\"_blank\" rel=\"noopener\">AdRoll Pixel<\/a>.<\/li>\n<li><a href=\"https:\/\/help.ads.microsoft.com\/#apex\/ads\/en\/56681\/2\" target=\"_blank\" rel=\"noopener\">Microsoft Advertising UET tag<\/a>, previously commonly associated with Bing Ads.<\/li>\n<li><a href=\"https:\/\/business.x.com\/en\/help\/campaign-measurement-and-analytics\/conversion-tracking-for-websites\" target=\"_blank\" rel=\"noopener\">X Pixel<\/a>, for the platform formerly called Twitter.<\/li>\n<\/ul>\n<p>These solutions may combine a base tag with specific events and, in some cases, server-side measurement. Their names, functions and configuration requirements can change, so the current documentation for each platform should be used.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Definition: A tracking pixel is a resource used to record a page load or an action performed on a website. Traditionally, it could be a transparent one-pixel image requested from a server; in current usage, the term is also applied to tags and code snippets that send events to an analytics or advertising platform. Depending [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","encyclopedia-tag":[1231],"class_list":["post-21361","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-tag-advertising-measurement"],"_links":{"self":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia\/21361","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=21361"}],"wp:term":[{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=21361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}