Re: Suggestion: description / summary metadata for emails in mailing list archive

On Wed, Oct 21, 2020 at 6:52 PM Andres Freund <andres(at)anarazel(dot)de> wrote:

> Hi,
>
> On 2020-10-21 13:31:08 -0300, Alvaro Herrera wrote:
> > On 2020-Oct-21, Alvaro Herrera wrote:
> >
> > > On 2020-Oct-21, Magnus Hagander wrote:
> > >
> > > > I've deployed code that does this for the archives. Don't have
> anything for
> > > > the docs and news yet, but I'll get to that in not-too-long.
> > >
> > > Thanks, great stuff. This just came in action in a Slack channel. It
> > > showed up as attached. IMO the image at 900x928 is a little bit on the
> > > large side. Slack resized it to about 1/4 of that for me, but still it
> > > seems excessive. Do we maybe have a smaller one we can use?
>

But Slony has such a nice face!!!

FWIW, the earlier test of this which used the favicon looked better in
> slack (except the overly puny resolution, of course). See attached.
>
> https://ogp.me/ suggests theres
> og:image:width - The number of pixels wide.
> og:image:height - The number of pixels high.
>
> no idea if that's in relation to the sizing of the preview or the actual
> image.
>

So we already have one that's 64x64 on the website at
https://www.postgresql.org/media/img/about/press/elephant64.png

We could easily use that one, but then maybe 64 is too small instead?

Has anybody seen any recommendations of what size one should use?

> Ah, Andres just posted on twitter.
> > https://twitter.com/AndresFreundTec/status/1318952305123676160
> > It looks better there as far as the image goes, but as on Slack the
> > author name is not displayed.
>
> Not sure they ever do. But I am also not clear whether the right tag is
> og:article:author, or article:author. Actually kind of seems the latter.
>

Yeah, I'd say that's entirely unclear. On the ogp.me site it says it should
be an array of structures. And in other examples it should be the URL to a
facebook profile.

Do you happen to have an example of where Slack *does* show the author name
(which is not a facebook profile)?

It is pretty clear it should be article:author and not og:article:author
though, per examples.

--
Magnus Hagander
Me: https://www.hagander.net/ <http://www.hagander.net/>
Work: https://www.redpill-linpro.com/ <http://www.redpill-linpro.com/>