EDIT - the dev i forked it from added a lemmy option and is absolutely smashing it on the dev front, definitely recommend to use theirs!!
https://github.com/driccio98/kbin-link https://addons.mozilla.org/en-US/firefox/addon/kbin-link/
Yo FIrefox just accepted my extension which makes interaction with other lemmy instances easier.
Chrome still tbc but Google should've accepted it by this time next week methinks.
https://addons.mozilla.org/en-GB/firefox/addon/lemmy-link/
https://github.com/FackJox/lemmy-link
It adds a small icon to other instances so that you can easily open it in your own lemmy instance for interaction etc.
It's simple, rough and ready but super useful, just input your lemmy instance in settings and then enable it for all sites or just the lemmy sites you want and hey presto.
Open for ideas, collaboration and feedback as always :)
Have you considered modifying this to be a pull-request for lemmy-ui? It’s cool to have an extension, but Lemmy being open-source makes it possible to merge the improvement upstream and make it better for everyone.