You got me scratching my head there ngl. If by inline expansion, you mean to say being able to show image in full size without clicking into details of the post, then I am seeing it's already there. And so far I haven't tweaked any UI settings on the website.

[–] Happy_Harry@lemmy.happyharry.org 2 points 1 year ago* (last edited 1 year ago)

Oh neat, I was clicking the image, not the little image logo in the corner. Learned something new.

It still doesn't let you drag to resize/zoom like RES does for images and videos, but better than what I was originally thinking. RES also works on image links in comments, which I don't see in Lemmy yet.

Example 1

Example 2