Hi folks. This is something I found myself wanting all the time while reading longer news stories, so I finally turned it into an extension.
I made versions for Chrome, Firefox, and Safari, as well as a bookmarklet that works anywhere. (You have to activate the bookmarklet on each page, so it's much more annoying to use, but so is searching the page for a name on an iPhone. The Firefox version is a UI-less WebExtension, so (I'm told) it actually works automatically on every page in Firefox for Android, which is pretty neat. I'd love it if Apple added support for running extensions automatically on iOS, but that seems pretty unlikely due to battery life concerns.)
The code is open source and up on GitHub.
