OpenSearch is a bit of a confusing mess, because it describes both search descriptions for a site as well as for a site to ask to be a global search engine (aka

OpenSearch is a bit of a confusing mess, because it describes both search descriptions for a site as well as for a site to ask to be a global search engine (aka OpenSearch plugins) Interestingly, Safari at least used to support the first - if you type something into the bar on a site which advertises opensearch, those results will be incorporated into the displayed list. For the global behavior, the guidance seems to have shifted from opensearch plugins to web extensions. Safari does not seem to support any of the search engine metadata fields currently.