Plus-HD is web browser extension and Browser helper Object designed to deliver contextual advertising. In addition, it will modify the default home page, search pages and has a "New Tab" function in order to promote advertising. The software is marketed as a variation of DivX Plus HD in order to be downloaded, even though it is not associated in any way with DivX. Multiple trusted antivirus programs flag Plus-HD as potential malware or adware. It is advised to uninstall it.