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Why can't Signal generate certain link previews? (midwest.social)

submitted 3 months ago by joshchandra@midwest.social to c/signal@lemmy.ml

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I was wanting to share a Hoopla Digital link with someone and it immediately declared "link preview unavailable" without even trying as it usually does. This library-backed website is harmless. Signal's preview generation can be a little bothersome at times.

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[–] lime@feddit.nu 5 points 3 months ago (2 children)

does the site have a link preview? those are not generated, they're created by the website maker.

[–] Azzu@lemm.ee 3 points 3 months ago (1 children)

They are generated out of the metadata in the sites header tag.

I've tried to add link previews for my own website in Signal and I was mildly unsuccessful in figuring out the right tags to use. But I also didn't spend a lot of time on it.

It's likely that Hoopla also doesn't generate the right metadata tags that Signal expects to generate the preview.

[–] lime@feddit.nu 1 points 3 months ago* (last edited 3 months ago)

well yeah, just like websites are generated from HTML. point being, someone has to make them.

[–] joshchandra@midwest.social 0 points 3 months ago

Hmm... how can I check?