The Sefaria Linker recognizes references on a web page, links them to the corresponding texts on Sefaria, and optionally provides a popup containing the text of the references.

It can be run either as a bookmarklet from a browser or embedded into page code. The embed code is meant for website admins to offer the Sefaria Linker to their users while the bookmarklet is meant for individuals who want to see the Sefaria Linker on any site they visit.

If run as a bookmarklet, a user can find references on any webpage s/he visits by clicking the bookmarklet. If embedded into page code, it will find references every time any user loads the page. (You can get browser bookmarklets here)