The impact of the popular content filter AdGuard on browsing security, privacy and user experience across a variety of devices is investigated in this study. This study looks at how AdGuard uses DNS sink holing and ad filtering, among other tactics, to block potentially hazardous content and advertisements. AdGuard’s ability to eliminate web trackers and enhance browsing security, in general, is how it assesses its effect on user privacy. The study also considers the effects of AdGuard’s capabilities on user experience over devices, including potential disruptions from ad blocking and the speed at which websites load. Through a close examination of these aspects, the paper aims to provide a comprehensive understanding of AdGuard’s role in improving browsing security while preserving user privacy and an excellent user experience.