this post was submitted on 08 Apr 2025
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Hi all,

This is a continuation of this thread around Mastodon/Lemmy integration.

I am trying to understand the formatting rules around Mastodon to Mastodon/Lemmy posts. My Mastodon instance is www.mstdn.games.

I was able to get this point:

Mastodon input:

Lemmy crosspost:

Let me walk through the key points.

1. Thumbnail

This works really well. You attach an image on Mastodon and it outputs the correct thumbnail on Lemmy (it even works across instances, I know there are issues with LW vs other instances in custom thumbnail attach).

2. Markdown Formatting

Doesn't seem to work on the Mastodon side. Not a big deal, the only somewhat relevant piece is the markdown URL syntax, but I can just use [Text - URL] style formatting.

I read that Mastodon is supposed to support markdown, but it seems to not be the case. Doesn't matter, but if someone has anyone info on this, I would appreciate it.

3. Mastodon to multiple Lemmy communities

I tried adding both [email protected] and [email protected]. It seems only the first Lemmy community URL gets crossposted (I was able to post to [email protected] when it was the first Lemmy URL).

Again, this is manageable. I can crosspost (within Lemmy) from my Lemmy account.

4. Direct URL Lemmy link with Text Heading

This doesn't seem to work. This is really annoying.

I can get text heading working on the Lemmy side, but the Lemmy URL always points to the Mastodon post URL:

Is there a way to define the URL on the Mastodon side so that Lemmy understands that the post must point to a specific URL (while having a separate Lemmy text heading and not having the post look like shit on the Mastodon side).

The last piece is critical for me. I don't want to post links to Mastodon in the [email protected] community.

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[–] [email protected] 1 points 1 week ago* (last edited 1 week ago) (10 children)

If anyone can ping someone from KDE (or relevant Lemmy developers?) that can provide more info, it would be greatly appreciated.

[–] [email protected] 3 points 1 week ago (1 children)

For KDE, I think @[email protected] and @[email protected] do post from mastodon to lemmy

[–] [email protected] 1 points 1 week ago
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