SearchConverterHD is the name of a dodgy Web browser extension that is not likely to offer you any unique tools. The only goal of the SearchConverterHD add-on is to hijack your Web browser. Users who have installed the SearchConverterHD add-on have likely been looking for a trustworthy utility that will help them convert various file types. However, there are many freely available websites online that will help you in this quest – you do not need to use third-party software.
Upon installing the SearchConverterHD add-on, you may notice that there are some changes to your system's settings. This is because once you install the SearchConverterHD extension, this shady utility will change your Web browser's settings to set up an affiliated website as your default new tab page. The site in question is hosted on the 'Search-converterhd.com' domain. This site serves as a basic search aggregator and may not offer you the flawless service you may expect.
The SearchConverterHD application is considered to be a PUP (Potentially Unwanted Program), which you are better off removing from your system. You can do this with the assistance of a trustworthy, up-to-date anti-malware solution.