On-site remarketing refers to the strategic use of marketing techniques and tools on a website to re-engage and convert visitors who have previously shown interest but did not make a purchase or take a desired action. This can include personalized pop-ups, targeted offers, and other tactics aimed at capturing the attention of potential customers and persuading them to complete a desired action before leaving the site. By utilizing on-site remarketing, businesses can effectively increase conversions and maximize the potential of their website traffic.