How to display images at certain sizes?

Digby

I want to display images (in my post on my forum) at smaller sizes, instead of taking up the entire post’s width.
I don’t want the actual images to be a lower pixel width/height, i just want them to display a half or a quarter the size of the page, something which i know is possible & easy to do in html/css.
Do you know anyway i could edit the string below to make the image appear smaller, if not then how else could i achieve this?
[upl-image-preview uuid=35afb0b2-4b8b-4d78-8859-8d21658a2c1a url=https://digby.flarum.cloud/assets/files/2025-05-24/1748070592-141238-img-4857-min.jpg alt={TEXT?}]

SKevo

Digby I am not sure, sorry. There seems to be a size= parameter in the source, but it doesn’t seem to do anything on my end. It would be best if you ask in https://discuss.flarum.org/d/4154

Digby

SKevo i got a reply on that discussion but i don’t know how to add custom css like the reply suggests. Could you help me figure this out?

SKevo

Digby you can add custom CSS in Admin > Appearance > Edit Custom CSS. For that, you need an actual CSS code that changes the size of your images (or have someone provide the CSS for you)