How to configure it so that the tall image is not displayed as a thumbnail？

[Heliosurge (Dan DeMontmorency)]

Checkout this theme-component I believe it is what your looking for.

Long picture adaptation

Summary Stretching images with an aspect ratio greater than 2:1 Repository GitHub - Lhcfl/discourse-larger-long-image Install Guide How to install a theme or theme component New to Discourse Themes? Beginner’s guide to using Discourse Themes Install this theme component Discourse often scales images to a suitable size and puts them into beautiful lightboxes. But this becomes a side effect on the sometimes lo…