For some reason, all of the images on the site are gigantic. Also, the resize image button doesn't work. Is there something wrong, or is this normal?

you can enable automatic resizing under your settings

resize image seems to be meant for if you have it automatically resized to a smaller image that fits your resolution, it restores it to its native resolution.

ippiki_ookami said:
you can enable automatic resizing under your settings

I have that setting active. It may just be my browser. Thanks, though.

If the text is huge as well, try hitting CTRL-0 (that's CTRL-zero). That might fix it.