Most modern browsers will detect if a website supports OpenSearch automatically. :
Select the option (often marked with a green plus icon). Manually Adding a Search Provider
If you are trying to provide OpenSearch to your users, you must include an OpenSearch Description Document (OSDD) in your site's header: Most modern browsers will detect if a website
To install as a search engine in your browser (прегледач), you can either use its autodiscovery feature while visiting a website or manually add it to your browser's search settings. Adding OpenSearch via Autodiscovery
In the URL field, enter the site’s search URL, replacing the search query with %s . : Open Settings > Search . Adding OpenSearch via Autodiscovery In the URL field,
Visit the website you want to add (e.g., a documentation site or specific search portal). Perform a search using the site's internal search bar.
This XML file tells the browser how to handle search queries from the address bar. OpenSearch description format - XML - MDN Web Docs Perform a search using the site's internal search bar
Go to > Search engine > Manage search engines and site search .