Site search enables you to search on various sites directly from the browser’s search bar. The implementation is rather low tech but it is useful for both remembering high-quality search engines and avoid having to navigate to a site first in order to use its search engine.
To add a site search to your browser, in this case Brave or Chrome, go to the settings page and search for “Site Search” or copy paste this:
I primarily use site search for translations, dictionary lookup, NPM search, Github search and occasionally Hacker News search. Here are a few of my most used site searches: