Hello Ambassadors, 

Would love to get your feedback and input on a proposed change to default thumbnail size on wikis, a similar change was made about 2 years ago moving the default from 180px to 220px, due to the increase in pixel density and screen sizes, both on mobile devices and desktops/laptops users, especially on mobile are feeling that images are too small, certainly out of step with what they are used to other places on the web. 

Based on research from the Analytics group "There are 15580 instances logged across 393 wikis in log.PrefUpdate_5563398" to the preference that stores thumbnail default size. On english Wikipedia the current value is 220px for "default" sized thumbnail images, the size logged in and logged out users see if they haven't manually changed their preference. Of the ~15k users who have changes this preference the trend is to set the preference to a larger size, usually 300px as seen by the graph included in the bug for this issue eventually I'd love for us to move to responsively sized images, but perhaps thats a seperate discussion.

If we could try to wrap things up mid-next week (July 16) so I can work with Operations to make 

Discussion on Technical Village Pump