This theme component allows you to show topic thumbnails in topic list views. You can see a demo right here on meta by visiting the #theme category.

:link: https://github.com/discourse/discourse-topic-thumbnails

:thinking: https://meta.discourse.org/t/how-do-i-install-a-theme-or-theme-component/63682

Optimized images are generated for the lists, and different resolutions are made available for high-dpi displays. Images are lazy-loaded as you scroll (where native browser support is available).

There are three modes, configurable per-category using the theme settings:

Grid mode:

Screenshot 2020-05-06 at 15.07.07: 623x500, 50%

Masonry mode:

Screenshot 2020-05-06 at 15.05.57: 627x500, 50%

And list mode:

Screenshot 2020-05-06 at 15.07.39: 652x500, 50%

This component makes use of brand new APIs in Discourse core, so you need to be running the latest version of tests-passed for it to function correctly.