I’m now trying to get used to the browser extension uMatrix. It’s a bit more advanced than uBlock Origin by the same developer and it let’s me select on which domains to allow or block cookies, css, scripts etc. I enabled the setting to block JavaScript by default, because I noticed that especially news sites sometimes load much faster (or at all) with JavaScript disabled and of course this reduces the amount of tracking a lot. Do you have experience with uMatrix and any tips on how to make the most use out of it?

You’re right, I just took another look at the specs and corrected the template and added the “mediaType” attribute and set it to HTML. Now microblog.pub shows the summary correctly (even with rendered HTML), Pleroma shows the content correctly (without markup), but Mastodon shows the raw HTML code of the summary. :thinking_face: