You can put the pictures in your post, just gotta get the right link
An example, is a GIF I liked to use on an old forum that had mass amounts of threads getting locked. so for fun id post:
This code is the one called "Forum Code" when you scoll down to the multiple codes available, this is the proper code to use to directly link see-able images on forums(will work for GIFs and plain old regular images)
Hope this helps!