On Mon, Jan 1, 2018 at 10:35 AM, Bartosz DziewoĆski <matma.rex(a)gmail.com> wrote:
The first of these pages has a "thumbnail"
defined, the second doesn't.
Unfortunately I don't know what generates this data, but perhaps someone
else can help.
In that instance, I believe it's not using the image because of the
aspect-ratio (very short-and-wide).
Whether an image is available to the hover-previews is determined by
https://www.mediawiki.org/wiki/Extension:PageImages#Image_choice (then
Extension:Popups - the "page previews/hovercards" extension - just
uses that.).
For example
https://fr.wikipedia.org/w/index.php?title=Louve_(outil)&action=info (image)
https://fr.wikipedia.org/w/index.php?title=Pince_universelle&action=info
(no image)
> Moreover, I have a feature request : it would be
great if the
> edit-preview would also display the hover-preview so that you can
> validate your modifications also with respect to the hover-preview of
> the article.
>
Good idea. Filed as
https://phabricator.wikimedia.org/T183870
Happy new year :)