That’s what this does:

[Some text here](community@instance.here)

Tap the ‘more’ skinny hamburger menu just above below this message to ‘view source’ of the below:

blah blah blah links to asklemmy@lemmy.ml

Actually…better, here is one for an instance that is neither yours or the one you posted into:

blay harg vlar

Yes, you can do this using a relative URL!

Here’s an example.

Here’s how I wrote it:

[Here's an example.](/c/asklemmy@lemmy.ml)

Because this URL doesn’t have a protocol or a domain, your browser fills those in from the URL of the page you’re on when you see it. Since that’s on your local Lemmy instance, you’ll see a link to !asklemmy@lemmy.ml on that instance.

Also: When you’re looking at a Lemmy comment, if you don’t know how the author wrote the markup for it, you can use the “view source” button underneath the “…” menu.

Note: These links will NOT work between Lemmy and Kbin, because Kbin uses /m/ instead of /c/.

Edit Sorry I misunderstood. I believe you can link the community as a whole, but posts I don’t believe you can.

There isn’t a way at the moment. Solutions to this are being discussed on Github

https://github.com/LemmyNet/lemmy-ui/issues/1048

Edit 2

Maybe you can’t link a community either, I could have sworn I have seen it done but that could have just happened to be for my instance.

Edit 3

My testing please ignore :)

Test

Once your Lemmy web frontend upgrades to version 0.18, the following should all auto-link with no extra syntax:

• !community@server.com
• /c/community@server.com
• /m/community@server.com
• /u/username@server.com

These should then all link to the instance you’re currently on.

Note: because this is implemented in the frontend and does not change the underlying data, other Fediverse clients will not show these the same unless they also implement this themselves.