Retargeting software enables businesses to display ads across the internet to users who have previously visited their website. Using cookie-based retargeting tools, the software tracks website visitors through pixels, which are implemented on a site via JavaScript. These cookies don’t affect the user experience or the site’s performance. Once a visitor leaves the website, the pixels notify retargeting platforms, triggering specific ads based on the pages the visitor viewed. This allows marketers to focus their advertising budget on individuals who are already familiar with their brand and have shown some level of engagement.